The version of Thunderbird installed on the remote Windows host is prior to 153.5. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2026-110 advisory.

  - Privilege escalation in the WebExtensions component. This vulnerability was fixed in Firefox 158 and     Firefox ESR 153.5. (CVE-2026-109778)

  - Sandbox escape due to use-after-free in the Networking component. This vulnerability was fixed in Firefox     158 and Firefox ESR 153.5. (CVE-2026-109707)

  - A malicious, compromised, or MITM-controlled Exchange server can return a single well-formed SOAP response     containing an element with enough attributes to keep Thunderbird's main thread CPU-bound for seconds to     hours. (CVE-2026-110249)

  - Privilege escalation in the Application Update component. This vulnerability was fixed in Firefox 158 and     Firefox ESR 153.5. (CVE-2026-109704)

  - Sandbox escape, site isolation issue due to incorrect boundary conditions, use-after-free in the     Networking component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5. (CVE-2026-109705)

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Debian 13 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-6560 advisory.

    - -------------------------------------------------------------------------     Debian Security Advisory DSA-6560-1                   security@debian.org     https://www.debian.org/security/                       Moritz Muehlenhoff     October 14, 2026                      https://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package        : firefox-esr     CVE ID         : CVE-2026-109705 CVE-2026-109706 CVE-2026-109707 CVE-2026-109708                      CVE-2026-109709 CVE-2026-109710 CVE-2026-109711 CVE-2026-109712                      CVE-2026-109713 CVE-2026-109715 CVE-2026-109716 CVE-2026-109717                      CVE-2026-109718 CVE-2026-109719 CVE-2026-109720 CVE-2026-109721                      CVE-2026-109722 CVE-2026-109723 CVE-2026-109724 CVE-2026-109725                      CVE-2026-109726 CVE-2026-109727 CVE-2026-109728 CVE-2026-109729                      CVE-2026-109730 CVE-2026-109731 CVE-2026-109732 CVE-2026-109733                      CVE-2026-109734 CVE-2026-109736 CVE-2026-109737 CVE-2026-109738                      CVE-2026-109741 CVE-2026-109742 CVE-2026-109743 CVE-2026-109744                      CVE-2026-109745 CVE-2026-109751 CVE-2026-109752 CVE-2026-109753                      CVE-2026-109754 CVE-2026-109756 CVE-2026-109757 CVE-2026-109759                      CVE-2026-109760 CVE-2026-109762 CVE-2026-109763 CVE-2026-109764                      CVE-2026-109765 CVE-2026-109766 CVE-2026-109767 CVE-2026-109770                      CVE-2026-109775 CVE-2026-109776 CVE-2026-109777 CVE-2026-109778                      CVE-2026-109781 CVE-2026-109782 CVE-2026-109783

    Multiple security issues have been found in the Mozilla Firefox web     browser, which could potentially result in the execution of arbitrary     code, sandbox escape, information disclosure, mitigation bypass or     privilege escalation.

    For the stable distribution (trixie), these problems have been fixed in     version 153.5.0esr-1~deb13u1.

    We recommend that you upgrade your firefox-esr packages.

    For the detailed security status of firefox-esr please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/firefox-esr

    Further information about Debian Security Advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://www.debian.org/security/

    Mailing list: debian-security-announce@lists.debian.org

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Debian 12 host has packages installed that are affected by multiple vulnerabilities as referenced in the dla-4863 advisory.

    - -------------------------------------------------------------------------     Debian LTS Advisory DLA-4863-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/               Emilio Pozuelo Monfort     October 26, 2026                              https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : thunderbird     Version        : 1:153.5.1esr-1~deb12u1     CVE ID         : CVE-2026-109705 CVE-2026-109706 CVE-2026-109707 CVE-2026-109708                      CVE-2026-109709 CVE-2026-109710 CVE-2026-109711 CVE-2026-109712                      CVE-2026-109713 CVE-2026-109715 CVE-2026-109716 CVE-2026-109717                      CVE-2026-109718 CVE-2026-109719 CVE-2026-109720 CVE-2026-109721                      CVE-2026-109722 CVE-2026-109723 CVE-2026-109724 CVE-2026-109725                      CVE-2026-109726 CVE-2026-109727 CVE-2026-109728 CVE-2026-109729                      CVE-2026-109730 CVE-2026-109731 CVE-2026-109732 CVE-2026-109733                      CVE-2026-109734 CVE-2026-109736 CVE-2026-109737 CVE-2026-109738                      CVE-2026-109741 CVE-2026-109742 CVE-2026-109743 CVE-2026-109744                      CVE-2026-109745 CVE-2026-109751 CVE-2026-109752 CVE-2026-109753                      CVE-2026-109754 CVE-2026-109756 CVE-2026-109757 CVE-2026-109759                      CVE-2026-109760 CVE-2026-109762 CVE-2026-109763 CVE-2026-109764                      CVE-2026-109765 CVE-2026-109766 CVE-2026-109767 CVE-2026-109770                      CVE-2026-109775 CVE-2026-109776 CVE-2026-109777 CVE-2026-109778                      CVE-2026-109781 CVE-2026-110249 CVE-2026-113470 CVE-2026-113866                      CVE-2026-113867 CVE-2026-113868

    Multiple security issues were discovered in Thunderbird, which could     result in the execution of arbitrary code or information disclosure

    Debian follows the Thunderbird upstream releases. Support for the 140.x     series has ended, so starting with this update we're now following the     153.x series.

    For Debian 12 bookworm, these problems have been fixed in version     1:153.5.1esr-1~deb12u1.

    We recommend that you upgrade your thunderbird packages.

    For the detailed security status of thunderbird please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/thunderbird

    Further information about Debian LTS security advisories, how to apply     these updates to your system and frequently asked questions can be     found at: https://wiki.debian.org/LTS

Tenable has extracted the preceding description block directly from the Debian security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 10 host has a package installed that is affected by multiple vulnerabilities as referenced in the ELSA-2026-89758 advisory.

    [153.5.0-1.0.1]
    - Fix firefox-oracle-default-prefs.js for new nss [Orabug: 37079773]
    - Add firefox-oracle-default-prefs.js and remove the corresponding Red Hat file

    [153.5.0-1]
    - Update to 153.5.0 ESR

    [140.15.0-1]
    - Update to 140.15.0 ESR

    [140.12.0-1]
    - Update to 140.12.0 ESR

    [140.11.0-1]
    - Update to 140.11.0 ESR

    [140.10.2-1]
    - Update to 140.10.2 ESR

    [140.10.1-1]
    - Update to 140.10.1 ESR

    [140.10.0-1]
    - Update to 140.10.0 ESR

    [140.9.1-1]
    - Update to 140.9.1 ESR

    [140.9.0-1]
    - Update to 140.9.0 ESR

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The Rocky Linux 10.2 host has packages installed that are affected by multiple vulnerabilities as referenced in the CIQ crlsa-2026_89758 advisory.

    * libexpat: denial of service via crafted XML input (CVE-2026-45186)

    * expat: expat: Information disclosure via heap buffer over-read in XML_ParseBuffer (CVE-2026-77214)

    * firefox: thunderbird: Privilege escalation in the Application Update component (CVE-2026-109704)

    * firefox: Use-after-free in the XML component (CVE-2026-109718)

    * firefox: Incorrect boundary conditions in the JavaScript Engine component (CVE-2026-109715)

    * firefox: firefox: Sandbox escape via incorrect boundary conditions in Win32 widget (CVE-2026-109740)

    * firefox: Use-after-free in the Storage: IndexedDB component (CVE-2026-109706)

    * firefox: Use-after-free in the Crash Reporting component (CVE-2026-109713)

    * firefox: Use-after-free in the DOM: Core & HTML component (CVE-2026-109724)

    * firefox: Information disclosure, privilege escalation in the Security: Process Sandboxing component     (CVE-2026-109709)

    * firefox: Sandbox escape, site isolation issue due to incorrect boundary conditions, use-after-free in     the Networking component (CVE-2026-109705)

    * firefox: Use-after-free in the JavaScript Engine: JIT component (CVE-2026-109729)

    * firefox: Incorrect boundary conditions in the JavaScript Engine component (CVE-2026-109716)

    * firefox: Race condition, use-after-free in the Graphics: CanvasWebGL component (CVE-2026-109719)

    * firefox: Integer overflow in the Layout: Text and Fonts component (CVE-2026-109723)

    * firefox: Sandbox escape due to incorrect boundary conditions in the Networking component     (CVE-2026-109708)

    * firefox: Use-after-free in the DOM: Bindings (WebIDL) component (CVE-2026-109717)

    * firefox: Sandbox escape due to use-after-free in the Networking component (CVE-2026-109707)

    * firefox: JIT miscompilation in the JavaScript: WebAssembly component (CVE-2026-109720)

    * firefox: Use-after-free in the SVG component (CVE-2026-109726)

    * firefox: Integer overflow in the Graphics component (CVE-2026-109730)

    * firefox: Use-after-free in the Audio/Video component (CVE-2026-109727)

    * firefox: Use-after-free in the DOM: Streams component (CVE-2026-109732)

    * firefox: Use-after-free in the DOM: Core & HTML component (CVE-2026-109725)

    * firefox: Sandbox escape due to uninitialized memory in the Graphics component (CVE-2026-109712)

    * firefox: Use-after-free in the Graphics: Canvas2D component (CVE-2026-109711)

    * firefox: JIT miscompilation in the JavaScript Engine: JIT component (CVE-2026-109722)

    * firefox: Use-after-free in the DOM: Animation component (CVE-2026-109728)

    * firefox: Incorrect boundary conditions in the JavaScript Engine: JIT component (CVE-2026-109721)

    Bug Fix(es) and Enhancement(s):

    * Firefox ESR 153 rebase [rhel-10.2.z] (JIRA:Rocky Linux-175166)

Tenable has extracted the preceding description block directly from the CIQ security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of thunderbird installed on the remote host is prior to 153.5.1-1. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2026-4057 advisory.

    Sandbox escape due to use-after-free in the DOM: Content Processes component. This vulnerability was fixed     in Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17. (CVE-2026-100762)

    Sandbox escape due to use-after-free in the DOM: Content Processes component. This vulnerability was fixed     in Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17. (CVE-2026-100770)

    Sandbox escape due to use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in     Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17. (CVE-2026-100778)

    Sandbox escape due to use-after-free in the Graphics component. This vulnerability was fixed in Firefox     ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17. (CVE-2026-100786)

    Sandbox escape due to use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in     Firefox ESR 153.4, Firefox 157, and Firefox ESR 140.17. (CVE-2026-100811)

    Sandbox escape due to use-after-free in the Widget: Gtk component. This vulnerability was fixed in Firefox     ESR 153.4, Firefox 157, and Firefox ESR 140.17. (CVE-2026-100818)

    Sandbox escape due to incorrect boundary conditions in the XPCOM component. This vulnerability was fixed     in Firefox ESR 153.4, Firefox 157, Firefox ESR 115.42, and Firefox ESR 140.17. (CVE-2026-100819)

    libexpat versions 2.7.2 through 2.8.5 contain an integer overflow vulnerability in expat_realloc()     function on 32-bit platforms when computing allocation sizes. Attackers supplying malicious XML to     applications parsing with vulnerable libexpat can cause heap buffer overflow, memory corruption, or denial     of service. (CVE-2026-102633)

    An attacker could cause a heap buffer overflow by getting a user to open an email that is greater than or     equal to 2GB in size. This vulnerability was fixed in Thunderbird 157, Thunderbird 140.17, and Thunderbird     153.4. (CVE-2026-103500)

    Privilege escalation in the Application Update component. This vulnerability was fixed in Firefox 158 and     Firefox ESR 153.5. (CVE-2026-109704)

    Use-after-free in the Storage: IndexedDB component. This vulnerability was fixed in Firefox 158, Firefox     ESR 115.43, and Firefox ESR 153.5. (CVE-2026-109706)

    Sandbox escape due to incorrect boundary conditions in the Networking component. This vulnerability was     fixed in Firefox 158 and Firefox ESR 153.5. (CVE-2026-109708)

    Information disclosure, privilege escalation in the Security: Process Sandboxing component. This     vulnerability was fixed in Firefox 158 and Firefox ESR 153.5. (CVE-2026-109709)

    Use-after-free in the Graphics: Text component. This vulnerability was fixed in Firefox 158, Firefox ESR     115.43, and Firefox ESR 153.5. (CVE-2026-109710)

    Use-after-free in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox 158 and     Firefox ESR 153.5. (CVE-2026-109711)

    Sandbox escape due to uninitialized memory in the Graphics component. This vulnerability was fixed in     Firefox 158, Firefox ESR 115.43, and Firefox ESR 153.5. (CVE-2026-109712)

    Use-after-free in the Crash Reporting component. This vulnerability was fixed in Firefox 158 and Firefox     ESR 153.5. (CVE-2026-109713)

    Incorrect boundary conditions in the JavaScript Engine component. This vulnerability was fixed in Firefox     158, Firefox ESR 115.43, and Firefox ESR 153.5. (CVE-2026-109715)

    Incorrect boundary conditions in the JavaScript Engine component. This vulnerability was fixed in Firefox     158, Firefox ESR 115.43, and Firefox ESR 153.5. (CVE-2026-109716)

    Use-after-free in the DOM: Bindings (WebIDL) component. This vulnerability was fixed in Firefox 158 and     Firefox ESR 153.5. (CVE-2026-109717)

    Use-after-free in the XML component. This vulnerability was fixed in Firefox 158, Firefox ESR 115.43, and     Firefox ESR 153.5. (CVE-2026-109718)

    Race condition, use-after-free in the Graphics: CanvasWebGL component. This vulnerability was fixed in     Firefox 158, Firefox ESR 115.43, and Firefox ESR 153.5. (CVE-2026-109719)

    JIT miscompilation in the JavaScript: WebAssembly component. This vulnerability was fixed in Firefox 158     and Firefox ESR 153.5. (CVE-2026-109720)

    Incorrect boundary conditions in the JavaScript Engine: JIT component. This vulnerability was fixed in     Firefox 158 and Firefox ESR 153.5. (CVE-2026-109721)

    JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 158,     Firefox ESR 115.43, and Firefox ESR 153.5. (CVE-2026-109722)

    Integer overflow in the Layout: Text and Fonts component. This vulnerability was fixed in Firefox 158 and     Firefox ESR 153.5. (CVE-2026-109723)

    Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 158 and Firefox     ESR 153.5. (CVE-2026-109724)

    Use-after-free in the DOM: Core & HTML component. This vulnerability was fixed in Firefox 158, Firefox ESR     115.43, and Firefox ESR 153.5. (CVE-2026-109725)

    Use-after-free in the SVG component. This vulnerability was fixed in Firefox 158, Firefox ESR 115.43, and     Firefox ESR 153.5. (CVE-2026-109726)

    Use-after-free in the Audio/Video component. This vulnerability was fixed in Firefox 158, Firefox ESR     115.43, and Firefox ESR 153.5. (CVE-2026-109727)

    Use-after-free in the DOM: Animation component. This vulnerability was fixed in Firefox 158, Firefox ESR     115.43, and Firefox ESR 153.5. (CVE-2026-109728)

    Use-after-free in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 158,     Firefox ESR 115.43, and Firefox ESR 153.5. (CVE-2026-109729)

    Integer overflow in the Graphics component. This vulnerability was fixed in Firefox 158, Firefox ESR     115.43, and Firefox ESR 153.5. (CVE-2026-109730)

    Incorrect boundary conditions in the Graphics: Canvas2D component. This vulnerability was fixed in Firefox     158 and Firefox ESR 153.5. (CVE-2026-109731)

    Use-after-free in the DOM: Streams component. This vulnerability was fixed in Firefox 158, Firefox ESR     115.43, and Firefox ESR 153.5. (CVE-2026-109732)

    JIT miscompilation in the JavaScript Engine: JIT component. This vulnerability was fixed in Firefox 158,     Firefox ESR 115.43, and Firefox ESR 153.5. (CVE-2026-109733)

    Mitigation bypass in the DOM: Security component. This vulnerability was fixed in Firefox 158 and Firefox     ESR 153.5. (CVE-2026-109734)

    Frame poisoning in the Layout component. This vulnerability was fixed in Firefox 158 and Firefox ESR     153.5. (CVE-2026-109736)

    Mitigation bypass in the Enterprise Policies component. This vulnerability was fixed in Firefox 158 and     Firefox ESR 153.5. (CVE-2026-109737)

    Use-after-free in the Audio/Video: Playback component. This vulnerability was fixed in Firefox 158 and     Firefox ESR 153.5. (CVE-2026-109738)

    Use-after-free in the Storage: Bucket File System component. This vulnerability was fixed in Firefox 158     and Firefox ESR 153.5. (CVE-2026-109741)

    Information disclosure in the PDF Viewer component. This vulnerability was fixed in Firefox 158 and     Firefox ESR 153.5. (CVE-2026-109742)

    Privilege escalation in the Panning and Zooming component. This vulnerability was fixed in Firefox 158 and     Firefox ESR 153.5. (CVE-2026-109743)

    Other issue in the DOM: File component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5.
    (CVE-2026-109744)

    Sandbox escape due to uninitialized memory in the DOM: Web Serial component. This vulnerability was fixed     in Firefox 158 and Firefox ESR 153.5. (CVE-2026-109745)

    Information disclosure in the Networking component. This vulnerability was fixed in Firefox 158 and     Firefox ESR 153.5. (CVE-2026-109751)

    Use-after-free in the DOM: Workers component. This vulnerability was fixed in Firefox 158 and Firefox ESR     153.5. (CVE-2026-109752)

    Incorrect boundary conditions in the Layout component. This vulnerability was fixed in Firefox 158,     Firefox ESR 115.43, and Firefox ESR 153.5. (CVE-2026-109753)

    Incorrect boundary conditions in the DOM: Editor component. This vulnerability was fixed in Firefox 158     and Firefox ESR 153.5. (CVE-2026-109754)

    Privilege escalation in the DOM: Navigation component. This vulnerability was fixed in Firefox 158 and     Firefox ESR 153.5. (CVE-2026-109756)

    Sandbox escape due to race condition in the Networking component. This vulnerability was fixed in Firefox     158 and Firefox ESR 153.5. (CVE-2026-109757)

    Site isolation issue in the Networking component. This vulnerability was fixed in Firefox 158 and Firefox     ESR 153.5. (CVE-2026-109759)

    Mitigation bypass in the Networking: HTTP component. This vulnerability was fixed in Firefox 158 and     Firefox ESR 153.5. (CVE-2026-109760)

    Incorrect boundary conditions in the SVG component. This vulnerability was fixed in Firefox 158 and     Firefox ESR 153.5. (CVE-2026-109762)

    Mitigation bypass in the File Handling component. This vulnerability was fixed in Firefox 158 and Firefox     ESR 153.5. (CVE-2026-109763)

    Mitigation bypass in the Enterprise Policies component. This vulnerability was fixed in Firefox 158 and     Firefox ESR 153.5. (CVE-2026-109764)

    Race condition, use-after-free in the Graphics: Text component. This vulnerability was fixed in Firefox     158 and Firefox ESR 153.5. (CVE-2026-109765)

    Mitigation bypass in the Enterprise Policies component. This vulnerability was fixed in Firefox 158 and     Firefox ESR 153.5. (CVE-2026-109766)

    Information disclosure in the Networking component. This vulnerability was fixed in Firefox 158 and     Firefox ESR 153.5. (CVE-2026-109767)

    Spoofing issue in the DOM: Web Serial component. This vulnerability was fixed in Firefox 158 and Firefox     ESR 153.5. (CVE-2026-109770)

    Denial-of-service in the WebRTC component. This vulnerability was fixed in Firefox 158 and Firefox ESR     153.5. (CVE-2026-109775)

    Race condition in the XPCOM component. This vulnerability was fixed in Firefox 158 and Firefox ESR 153.5.
    (CVE-2026-109776)

    Information disclosure in the Storage: IndexedDB component. This vulnerability was fixed in Firefox 158     and Firefox ESR 153.5. (CVE-2026-109777)

    Privilege escalation in the WebExtensions component. This vulnerability was fixed in Firefox 158 and     Firefox ESR 153.5. (CVE-2026-109778)

    Denial-of-service in the Printing: Output component. This vulnerability was fixed in Firefox 158 and     Firefox ESR 153.5. (CVE-2026-109781)

    Mitigation bypass in the File Handling component. This vulnerability was fixed in Firefox ESR 153.5.
    (CVE-2026-109782)

    Mitigation bypass in the File Handling component. This vulnerability was fixed in Firefox ESR 153.5.
    (CVE-2026-109783)

    A malicious, compromised, or MITM-controlled Exchange server can return a single well-formed SOAP response     containing an element with enough attributes to keep Thunderbird's main thread CPU-bound for seconds to     hours. This vulnerability was fixed in Thunderbird 158 and Thunderbird 153.5. (CVE-2026-110249)

    When setting up an account, Thunderbird's Exchange AutoDiscover lookup also queried the domain's     AutoDiscover service over plain HTTP. Due to a bug, that unencrypted request included the credentials the     user had entered, allowing a network attacker to obtain the user's password. This vulnerability was fixed     in Thunderbird 158.0.1 and Thunderbird 153.5.1. (CVE-2026-113866)

    Thunderbird did not escape attribute values when serializing outgoing XMPP stanzas. Because values from     incoming requests were echoed back in automatic replies, a remote XMPP user could send a crafted request     that caused Thunderbird to inject arbitrary stanzas into the user's connection, which the server would     then process as if sent by the user. This could be used to send messages or change contact and     subscription settings on behalf of the user, without any interaction. This bug only affects Thunderbird's     chat feature with XMPP accounts. This vulnerability was fixed in Thunderbird 158.0.1 and Thunderbird     153.5.1. (CVE-2026-113867)

    When authenticating to a POP3 or SMTP server using NTLM, Thunderbird did not check whether the server's     challenge was valid base64. A malicious server could send a challenge that caused Thunderbird to include     uninitialized heap memory in its NTLM response, disclosing that memory to the server. A challenge     consisting only of base64 padding also caused an out-of-bounds read, crashing Thunderbird. This affected     accounts configured to use NTLM or GSSAPI authentication. The uninitialized memory disclosure only     affected NTLM. This vulnerability was fixed in Thunderbird 158.0.1 and Thunderbird 153.5.1.
    (CVE-2026-113868)

    Expat through 2.8.4 fails to validate low surrogates following high surrogates in UTF-16 input, allowing     malformed UTF-16 sequences to be accepted. Attackers can craft UTF-16 encoded XML with lone high     surrogates that consume following code units, hiding markup characters from the parser and enabling XML     injection attacks. (CVE-2026-93990)

Tenable has extracted the preceding description block directly from the tested product security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote RockyLinux 8 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:89756 advisory.

    * libexpat: denial of service via crafted XML input (CVE-2026-45186)

    * firefox: thunderbird: Privilege escalation in the Application Update component (CVE-2026-109704)

    * firefox: Use-after-free in the XML component (CVE-2026-109718)

    * firefox: Information disclosure in the PDF Viewer component (CVE-2026-109742)

    * firefox: Incorrect boundary conditions in the JavaScript Engine component (CVE-2026-109715)

    * firefox: firefox: Sandbox escape via incorrect boundary conditions in Win32 widget (CVE-2026-109740)

    * firefox: Use-after-free in the Storage: IndexedDB component (CVE-2026-109706)

    * firefox: Use-after-free in the Crash Reporting component (CVE-2026-109713)

    * firefox: Use-after-free in the DOM: Core & HTML component (CVE-2026-109724)

    * firefox: Sandbox escape due to uninitialized memory in the DOM: Web Serial component (CVE-2026-109745)

    * firefox: Mitigation bypass in the File Handling component (CVE-2026-109782)

    * firefox: Information disclosure, privilege escalation in the Security: Process Sandboxing component     (CVE-2026-109709)

    * firefox: Sandbox escape, site isolation issue due to incorrect boundary conditions, use-after-free in     the Networking component (CVE-2026-109705)

    * firefox: Use-after-free in the Audio/Video: Playback component (CVE-2026-109738)

    * firefox: Use-after-free in the Storage: Bucket File System component (CVE-2026-109741)

    * firefox: Use-after-free in the JavaScript Engine: JIT component (CVE-2026-109729)

    * firefox: Other issue in the DOM: File component (CVE-2026-109744)

    * firefox: Incorrect boundary conditions in the JavaScript Engine component (CVE-2026-109716)

    * firefox: Race condition, use-after-free in the Graphics: CanvasWebGL component (CVE-2026-109719)

    * firefox: Incorrect boundary conditions in the Layout component (CVE-2026-109753)

    * firefox: Integer overflow in the Layout: Text and Fonts component (CVE-2026-109723)

    * firefox: JIT miscompilation in the JavaScript Engine: JIT component (CVE-2026-109733)

    * firefox: Sandbox escape due to incorrect boundary conditions in the Networking component     (CVE-2026-109708)

    * firefox: Use-after-free in the DOM: Bindings (WebIDL) component (CVE-2026-109717)

    * firefox: Use-after-free in the DOM: Workers component (CVE-2026-109752)

    * firefox: Sandbox escape due to use-after-free in the Networking component (CVE-2026-109707)

    * firefox: JIT miscompilation in the JavaScript: WebAssembly component (CVE-2026-109720)

    * firefox: Use-after-free in the SVG component (CVE-2026-109726)

    * firefox: Integer overflow in the Graphics component (CVE-2026-109730)

    * firefox: Use-after-free in the Audio/Video component (CVE-2026-109727)

    * firefox: Mitigation bypass in the Enterprise Policies component (CVE-2026-109737)

    * firefox: Use-after-free in the DOM: Streams component (CVE-2026-109732)

    * firefox: Information disclosure in the Networking component (CVE-2026-109751)

    * firefox: Use-after-free in the DOM: Core & HTML component (CVE-2026-109725)

    * firefox: Sandbox escape due to uninitialized memory in the Graphics component (CVE-2026-109712)

    * firefox: Use-after-free in the Graphics: Canvas2D component (CVE-2026-109711)

    * firefox: Frame poisoning in the Layout component (CVE-2026-109736)

    * firefox: JIT miscompilation in the JavaScript Engine: JIT component (CVE-2026-109722)

    * firefox: Use-after-free in the DOM: Animation component (CVE-2026-109728)

    * firefox: Incorrect boundary conditions in the JavaScript Engine: JIT component (CVE-2026-109721)

    * firefox: Privilege escalation in the Panning and Zooming component (CVE-2026-109743)

    Bug Fix(es) and Enhancement(s):

    * Firefox ESR 153 rebase [rhel-8.10.z] (JIRA:Rocky Linux-175143)

Tenable has extracted the preceding description block directly from the RockyLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote openSUSE 16 host has packages installed that are affected by multiple vulnerabilities as referenced in the openSUSE-SU-2026:22139-1 advisory.

    Firefox Extended Support Release 153.5.0 ESR (MFSA 2026-108, bsc#1284493):

    - CVE-2026-109704: Privilege escalation in the Application Update component.
    - CVE-2026-109705: Sandbox escape, site isolation issue due to incorrect boundary conditions, use-after-     free in the       Networking component.
    - CVE-2026-109706: Use-after-free in the Storage: IndexedDB component.
    - CVE-2026-109707: Sandbox escape due to use-after-free in the Networking component.
    - CVE-2026-109708: Sandbox escape due to incorrect boundary conditions in the Networking component.
    - CVE-2026-109709: Information disclosure, privilege escalation in the Security: Process Sandboxing     component.
    - CVE-2026-109710: Use-after-free in the Graphics: Text component.
    - CVE-2026-109711: Use-after-free in the Graphics: Canvas2D component.
    - CVE-2026-109712: Sandbox escape due to uninitialized memory in the Graphics component.
    - CVE-2026-109713: Use-after-free in the Crash Reporting component.
    - CVE-2026-109715: Incorrect boundary conditions in the JavaScript Engine component.
    - CVE-2026-109716: Incorrect boundary conditions in the JavaScript Engine component.
    - CVE-2026-109717: Use-after-free in the DOM: Bindings (WebIDL) component.
    - CVE-2026-109718: Use-after-free in the XML component.
    - CVE-2026-109719: Race condition, use-after-free in the Graphics: CanvasWebGL component.
    - CVE-2026-109720: JIT miscompilation in the JavaScript: WebAssembly component.
    - CVE-2026-109721: Incorrect boundary conditions in the JavaScript Engine: JIT component.
    - CVE-2026-109722: JIT miscompilation in the JavaScript Engine: JIT component.
    - CVE-2026-109723: Integer overflow in the Layout: Text and Fonts component.
    - CVE-2026-109724: Use-after-free in the DOM: Core & HTML component.
    - CVE-2026-109725: Use-after-free in the DOM: Core & HTML component.
    - CVE-2026-109726: Use-after-free in the SVG component.
    - CVE-2026-109727: Use-after-free in the Audio/Video component.
    - CVE-2026-109728: Use-after-free in the DOM: Animation component.
    - CVE-2026-109729: Use-after-free in the JavaScript Engine: JIT component.
    - CVE-2026-109730: Integer overflow in the Graphics component.
    - CVE-2026-109731: Incorrect boundary conditions in the Graphics: Canvas2D component.
    - CVE-2026-109732: Use-after-free in the DOM: Streams component.
    - CVE-2026-109733: JIT miscompilation in the JavaScript Engine: JIT component.
    - CVE-2026-109734: Mitigation bypass in the DOM: Security component.
    - CVE-2026-109736: Frame poisoning in the Layout component.
    - CVE-2026-109737: Mitigation bypass in the Enterprise Policies component.
    - CVE-2026-109738: Use-after-free in the Audio/Video: Playback component.
    - CVE-2026-109740: Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component.
    - CVE-2026-109741: Use-after-free in the Storage: Bucket File System component.
    - CVE-2026-109742: Information disclosure in the PDF Viewer component.
    - CVE-2026-109743: Privilege escalation in the Panning and Zooming component.
    - CVE-2026-109744: Other issue in the DOM: File component.
    - CVE-2026-109745: Sandbox escape due to uninitialized memory in the DOM: Web Serial component.
    - CVE-2026-109751: Information disclosure in the Networking component.
    - CVE-2026-109752: Use-after-free in the DOM: Workers component.
    - CVE-2026-109753: Incorrect boundary conditions in the Layout component.
    - CVE-2026-109754: Incorrect boundary conditions in the DOM: Editor component.
    - CVE-2026-109756: Privilege escalation in the DOM: Navigation component.
    - CVE-2026-109757: Sandbox escape due to race condition in the Networking component.
    - CVE-2026-109759: Site isolation issue in the Networking component.
    - CVE-2026-109760: Mitigation bypass in the Networking: HTTP component.
    - CVE-2026-109762: Incorrect boundary conditions in the SVG component.
    - CVE-2026-109763: Mitigation bypass in the File Handling component.
    - CVE-2026-109764: Mitigation bypass in the Enterprise Policies component.
    - CVE-2026-109765: Race condition, use-after-free in the Graphics: Text component.
    - CVE-2026-109766: Mitigation bypass in the Enterprise Policies component.
    - CVE-2026-109767: Information disclosure in the Networking component.
    - CVE-2026-109770: Spoofing issue in the DOM: Web Serial component.
    - CVE-2026-109775: Denial-of-service in the WebRTC component.
    - CVE-2026-109776: Race condition in the XPCOM component.
    - CVE-2026-109777: Information disclosure in the Storage: IndexedDB component.
    - CVE-2026-109778: Privilege escalation in the WebExtensions component.
    - CVE-2026-109781: Denial-of-service in the Printing: Output component.
    - CVE-2026-109782: Mitigation bypass in the File Handling component.
    - CVE-2026-109783: Mitigation bypass in the File Handling component.

    libexpat updated:

    - CVE-2026-32776: libexpat: NULL pointer dereference when processing empty external parameter entities     inside       an entity declaration value. (bsc#1259727)
    - CVE-2026-32777: libexpat: denial of service due to infinite loop in DTD content parsing. (bsc#1259712)
    - CVE-2026-32778: libexpat: NULL pointer dereference in `setContext` on retry after an out-of-memory     condition. (bsc#1259730)
    - CVE-2026-41080: libexpat: insufficient entropy, and thus hash flooding can occur via a crafted XML     document. (bsc#1262263)
    - CVE-2026-45186: libexpat: computational complexity of attribute name collision checks allows a denial of     service via moderately       sized crafted XML input. (bsc#1264713)
    - CVE-2026-50219: libexpat: Use-after-free vulnerability due to lack of handler call depth tracking in     libexpat could lead to       information disclosure, integrity loss, or denial of service. (bsc#1275098)
    - CVE-2026-56131: libexpat: Use-after-free vulnerability due to a lack of handler call depth tracking for     XML_ResumeParser in       libexpat could lead to denial of service. (bsc#1275098)
    - CVE-2026-56132: libexpat: Heap buffer overflow in doProlog due to mishandled array reallocation in     libexpat could lead to       denial of service or memory corruption. (bsc#1275098)
    - CVE-2026-56403: libexpat: Integer overflow vulnerability in the storeAtts attribute parsing function in     libexpat could lead       to memory corruption. (bsc#1275098)
    - CVE-2026-56404: libexpat: Integer overflow vulnerability in the addBinding routine of libexpat could     lead to memory corruption       and potential security risks. (bsc#1275098)
    - CVE-2026-56405: libexpat: Integer overflow vulnerability in libexpat could lead to memory corruption or     denial of service. (bsc#1275098)
    - CVE-2026-56406: libexpat: Integer overflow vulnerability in libexpat could lead to memory corruption or     denial of service. (bsc#1275098)
    - CVE-2026-56407: libexpat: Integer overflow vulnerability in libexpat could lead to memory corruption or     denial of service. (bsc#1275098)
    - CVE-2026-56408: libexpat: Integer overflow vulnerability in the copyString function in libexpat could     lead to memory corruption. (bsc#1275098)
    - CVE-2026-56409: libexpat: Integer overflow vulnerability in libexpat could lead to memory corruption or     denial of service. (bsc#1275098)
    - CVE-2026-56410: libexpat: Integer overflow vulnerability in the xmlwf utility of libexpat could lead to     denial of service. (bsc#1275098)
    - CVE-2026-56411: libexpat: Integer overflow vulnerability in libexpat could lead to memory corruption or     denial of service. (bsc#1275098)
    - CVE-2026-56412: libexpat: Use-after-free vulnerability due to a lack of handler call depth tracking in     libexpat could lead to denial of       service or memory corruption. (bsc#1275098)
    - CVE-2026-66046: libexpat: denial of service vulnerability caused by quadratic algorithmic complexity in     the storeAtts() function       in xmlparse.c. (bsc#1275736)
    - CVE-2026-72522: libexpat: Out-of-bounds read and resultant infinite loop in the Unicode processing     functions in libexpat allowed       attackers to cause denial of service. (bsc#1275605)
    - CVE-2026-76641: libexpat: Out-of-bounds read vulnerability caused by a struct size mismatch in libexpat     allowed attackers to trigger       memory corruption or a crash. (bsc#1275736)
    - CVE-2026-76956: libexpat: Insufficient entropy caused by misinterpretation of getentropy's return code     in libexpat allowed attackers       to cause a denial of service via hash flooding attacks. (bsc#1275736)
    - CVE-2026-76957: libexpat: Use-after-free vulnerability due to lack of handler call depth tracking with     custom encoding callbacks in       libexpat could lead to memory corruption. (bsc#1275736)
    - CVE-2026-93990: libexpat: Improper handling of lone high surrogates in UTF-16 encoded XML in libexpat     allowed attackers to pass unpaired       surrogates or silently replace input characters. (bsc#1282347)

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLES16 / SLES_SAP16 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:24260-1 advisory.

    Firefox Extended Support Release 153.5.0 ESR (MFSA 2026-108, bsc#1284493):

    - CVE-2026-109704: Privilege escalation in the Application Update component.
    - CVE-2026-109705: Sandbox escape, site isolation issue due to incorrect boundary conditions, use-after-     free in the       Networking component.
    - CVE-2026-109706: Use-after-free in the Storage: IndexedDB component.
    - CVE-2026-109707: Sandbox escape due to use-after-free in the Networking component.
    - CVE-2026-109708: Sandbox escape due to incorrect boundary conditions in the Networking component.
    - CVE-2026-109709: Information disclosure, privilege escalation in the Security: Process Sandboxing     component.
    - CVE-2026-109710: Use-after-free in the Graphics: Text component.
    - CVE-2026-109711: Use-after-free in the Graphics: Canvas2D component.
    - CVE-2026-109712: Sandbox escape due to uninitialized memory in the Graphics component.
    - CVE-2026-109713: Use-after-free in the Crash Reporting component.
    - CVE-2026-109715: Incorrect boundary conditions in the JavaScript Engine component.
    - CVE-2026-109716: Incorrect boundary conditions in the JavaScript Engine component.
    - CVE-2026-109717: Use-after-free in the DOM: Bindings (WebIDL) component.
    - CVE-2026-109718: Use-after-free in the XML component.
    - CVE-2026-109719: Race condition, use-after-free in the Graphics: CanvasWebGL component.
    - CVE-2026-109720: JIT miscompilation in the JavaScript: WebAssembly component.
    - CVE-2026-109721: Incorrect boundary conditions in the JavaScript Engine: JIT component.
    - CVE-2026-109722: JIT miscompilation in the JavaScript Engine: JIT component.
    - CVE-2026-109723: Integer overflow in the Layout: Text and Fonts component.
    - CVE-2026-109724: Use-after-free in the DOM: Core & HTML component.
    - CVE-2026-109725: Use-after-free in the DOM: Core & HTML component.
    - CVE-2026-109726: Use-after-free in the SVG component.
    - CVE-2026-109727: Use-after-free in the Audio/Video component.
    - CVE-2026-109728: Use-after-free in the DOM: Animation component.
    - CVE-2026-109729: Use-after-free in the JavaScript Engine: JIT component.
    - CVE-2026-109730: Integer overflow in the Graphics component.
    - CVE-2026-109731: Incorrect boundary conditions in the Graphics: Canvas2D component.
    - CVE-2026-109732: Use-after-free in the DOM: Streams component.
    - CVE-2026-109733: JIT miscompilation in the JavaScript Engine: JIT component.
    - CVE-2026-109734: Mitigation bypass in the DOM: Security component.
    - CVE-2026-109736: Frame poisoning in the Layout component.
    - CVE-2026-109737: Mitigation bypass in the Enterprise Policies component.
    - CVE-2026-109738: Use-after-free in the Audio/Video: Playback component.
    - CVE-2026-109740: Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component.
    - CVE-2026-109741: Use-after-free in the Storage: Bucket File System component.
    - CVE-2026-109742: Information disclosure in the PDF Viewer component.
    - CVE-2026-109743: Privilege escalation in the Panning and Zooming component.
    - CVE-2026-109744: Other issue in the DOM: File component.
    - CVE-2026-109745: Sandbox escape due to uninitialized memory in the DOM: Web Serial component.
    - CVE-2026-109751: Information disclosure in the Networking component.
    - CVE-2026-109752: Use-after-free in the DOM: Workers component.
    - CVE-2026-109753: Incorrect boundary conditions in the Layout component.
    - CVE-2026-109754: Incorrect boundary conditions in the DOM: Editor component.
    - CVE-2026-109756: Privilege escalation in the DOM: Navigation component.
    - CVE-2026-109757: Sandbox escape due to race condition in the Networking component.
    - CVE-2026-109759: Site isolation issue in the Networking component.
    - CVE-2026-109760: Mitigation bypass in the Networking: HTTP component.
    - CVE-2026-109762: Incorrect boundary conditions in the SVG component.
    - CVE-2026-109763: Mitigation bypass in the File Handling component.
    - CVE-2026-109764: Mitigation bypass in the Enterprise Policies component.
    - CVE-2026-109765: Race condition, use-after-free in the Graphics: Text component.
    - CVE-2026-109766: Mitigation bypass in the Enterprise Policies component.
    - CVE-2026-109767: Information disclosure in the Networking component.
    - CVE-2026-109770: Spoofing issue in the DOM: Web Serial component.
    - CVE-2026-109775: Denial-of-service in the WebRTC component.
    - CVE-2026-109776: Race condition in the XPCOM component.
    - CVE-2026-109777: Information disclosure in the Storage: IndexedDB component.
    - CVE-2026-109778: Privilege escalation in the WebExtensions component.
    - CVE-2026-109781: Denial-of-service in the Printing: Output component.
    - CVE-2026-109782: Mitigation bypass in the File Handling component.
    - CVE-2026-109783: Mitigation bypass in the File Handling component.

    libexpat updated:

    - CVE-2026-32776: libexpat: NULL pointer dereference when processing empty external parameter entities     inside       an entity declaration value. (bsc#1259727)
    - CVE-2026-32777: libexpat: denial of service due to infinite loop in DTD content parsing. (bsc#1259712)
    - CVE-2026-32778: libexpat: NULL pointer dereference in `setContext` on retry after an out-of-memory     condition. (bsc#1259730)
    - CVE-2026-41080: libexpat: insufficient entropy, and thus hash flooding can occur via a crafted XML     document. (bsc#1262263)
    - CVE-2026-45186: libexpat: computational complexity of attribute name collision checks allows a denial of     service via moderately       sized crafted XML input. (bsc#1264713)
    - CVE-2026-50219: libexpat: Use-after-free vulnerability due to lack of handler call depth tracking in     libexpat could lead to       information disclosure, integrity loss, or denial of service. (bsc#1275098)
    - CVE-2026-56131: libexpat: Use-after-free vulnerability due to a lack of handler call depth tracking for     XML_ResumeParser in       libexpat could lead to denial of service. (bsc#1275098)
    - CVE-2026-56132: libexpat: Heap buffer overflow in doProlog due to mishandled array reallocation in     libexpat could lead to       denial of service or memory corruption. (bsc#1275098)
    - CVE-2026-56403: libexpat: Integer overflow vulnerability in the storeAtts attribute parsing function in     libexpat could lead       to memory corruption. (bsc#1275098)
    - CVE-2026-56404: libexpat: Integer overflow vulnerability in the addBinding routine of libexpat could     lead to memory corruption       and potential security risks. (bsc#1275098)
    - CVE-2026-56405: libexpat: Integer overflow vulnerability in libexpat could lead to memory corruption or     denial of service. (bsc#1275098)
    - CVE-2026-56406: libexpat: Integer overflow vulnerability in libexpat could lead to memory corruption or     denial of service. (bsc#1275098)
    - CVE-2026-56407: libexpat: Integer overflow vulnerability in libexpat could lead to memory corruption or     denial of service. (bsc#1275098)
    - CVE-2026-56408: libexpat: Integer overflow vulnerability in the copyString function in libexpat could     lead to memory corruption. (bsc#1275098)
    - CVE-2026-56409: libexpat: Integer overflow vulnerability in libexpat could lead to memory corruption or     denial of service. (bsc#1275098)
    - CVE-2026-56410: libexpat: Integer overflow vulnerability in the xmlwf utility of libexpat could lead to     denial of service. (bsc#1275098)
    - CVE-2026-56411: libexpat: Integer overflow vulnerability in libexpat could lead to memory corruption or     denial of service. (bsc#1275098)
    - CVE-2026-56412: libexpat: Use-after-free vulnerability due to a lack of handler call depth tracking in     libexpat could lead to denial of       service or memory corruption. (bsc#1275098)
    - CVE-2026-66046: libexpat: denial of service vulnerability caused by quadratic algorithmic complexity in     the storeAtts() function       in xmlparse.c. (bsc#1275736)
    - CVE-2026-72522: libexpat: Out-of-bounds read and resultant infinite loop in the Unicode processing     functions in libexpat allowed       attackers to cause denial of service. (bsc#1275605)
    - CVE-2026-76641: libexpat: Out-of-bounds read vulnerability caused by a struct size mismatch in libexpat     allowed attackers to trigger       memory corruption or a crash. (bsc#1275736)
    - CVE-2026-76956: libexpat: Insufficient entropy caused by misinterpretation of getentropy's return code     in libexpat allowed attackers       to cause a denial of service via hash flooding attacks. (bsc#1275736)
    - CVE-2026-76957: libexpat: Use-after-free vulnerability due to lack of handler call depth tracking with     custom encoding callbacks in       libexpat could lead to memory corruption. (bsc#1275736)
    - CVE-2026-93990: libexpat: Improper handling of lone high surrogates in UTF-16 encoded XML in libexpat     allowed attackers to pass unpaired       surrogates or silently replace input characters. (bsc#1282347)

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote SUSE Linux SLED15 / SLED_SAP15 / SLES15 / SLES_SAP15 host has packages installed that are affected by multiple vulnerabilities as referenced in the SUSE-SU-2026:4834-1 advisory.

    Firefox Extended Support Release 153.5.0 ESR (MFSA 2026-108, bsc#1284493):

    - CVE-2026-109704: Privilege escalation in the Application Update component.
    - CVE-2026-109705: Sandbox escape, site isolation issue due to incorrect boundary conditions, use-after-     free in the       Networking component.
    - CVE-2026-109706: Use-after-free in the Storage: IndexedDB component.
    - CVE-2026-109707: Sandbox escape due to use-after-free in the Networking component.
    - CVE-2026-109708: Sandbox escape due to incorrect boundary conditions in the Networking component.
    - CVE-2026-109709: Information disclosure, privilege escalation in the Security: Process Sandboxing     component.
    - CVE-2026-109710: Use-after-free in the Graphics: Text component.
    - CVE-2026-109711: Use-after-free in the Graphics: Canvas2D component.
    - CVE-2026-109712: Sandbox escape due to uninitialized memory in the Graphics component.
    - CVE-2026-109713: Use-after-free in the Crash Reporting component.
    - CVE-2026-109715: Incorrect boundary conditions in the JavaScript Engine component.
    - CVE-2026-109716: Incorrect boundary conditions in the JavaScript Engine component.
    - CVE-2026-109717: Use-after-free in the DOM: Bindings (WebIDL) component.
    - CVE-2026-109718: Use-after-free in the XML component.
    - CVE-2026-109719: Race condition, use-after-free in the Graphics: CanvasWebGL component.
    - CVE-2026-109720: JIT miscompilation in the JavaScript: WebAssembly component.
    - CVE-2026-109721: Incorrect boundary conditions in the JavaScript Engine: JIT component.
    - CVE-2026-109722: JIT miscompilation in the JavaScript Engine: JIT component.
    - CVE-2026-109723: Integer overflow in the Layout: Text and Fonts component.
    - CVE-2026-109724: Use-after-free in the DOM: Core & HTML component.
    - CVE-2026-109725: Use-after-free in the DOM: Core & HTML component.
    - CVE-2026-109726: Use-after-free in the SVG component.
    - CVE-2026-109727: Use-after-free in the Audio/Video component.
    - CVE-2026-109728: Use-after-free in the DOM: Animation component.
    - CVE-2026-109729: Use-after-free in the JavaScript Engine: JIT component.
    - CVE-2026-109730: Integer overflow in the Graphics component.
    - CVE-2026-109731: Incorrect boundary conditions in the Graphics: Canvas2D component.
    - CVE-2026-109732: Use-after-free in the DOM: Streams component.
    - CVE-2026-109733: JIT miscompilation in the JavaScript Engine: JIT component.
    - CVE-2026-109734: Mitigation bypass in the DOM: Security component.
    - CVE-2026-109736: Frame poisoning in the Layout component.
    - CVE-2026-109737: Mitigation bypass in the Enterprise Policies component.
    - CVE-2026-109738: Use-after-free in the Audio/Video: Playback component.
    - CVE-2026-109740: Sandbox escape due to incorrect boundary conditions in the Widget: Win32 component.
    - CVE-2026-109741: Use-after-free in the Storage: Bucket File System component.
    - CVE-2026-109742: Information disclosure in the PDF Viewer component.
    - CVE-2026-109743: Privilege escalation in the Panning and Zooming component.
    - CVE-2026-109744: Other issue in the DOM: File component.
    - CVE-2026-109745: Sandbox escape due to uninitialized memory in the DOM: Web Serial component.
    - CVE-2026-109751: Information disclosure in the Networking component.
    - CVE-2026-109752: Use-after-free in the DOM: Workers component.
    - CVE-2026-109753: Incorrect boundary conditions in the Layout component.
    - CVE-2026-109754: Incorrect boundary conditions in the DOM: Editor component.
    - CVE-2026-109756: Privilege escalation in the DOM: Navigation component.
    - CVE-2026-109757: Sandbox escape due to race condition in the Networking component.
    - CVE-2026-109759: Site isolation issue in the Networking component.
    - CVE-2026-109760: Mitigation bypass in the Networking: HTTP component.
    - CVE-2026-109762: Incorrect boundary conditions in the SVG component.
    - CVE-2026-109763: Mitigation bypass in the File Handling component.
    - CVE-2026-109764: Mitigation bypass in the Enterprise Policies component.
    - CVE-2026-109765: Race condition, use-after-free in the Graphics: Text component.
    - CVE-2026-109766: Mitigation bypass in the Enterprise Policies component.
    - CVE-2026-109767: Information disclosure in the Networking component.
    - CVE-2026-109770: Spoofing issue in the DOM: Web Serial component.
    - CVE-2026-109775: Denial-of-service in the WebRTC component.
    - CVE-2026-109776: Race condition in the XPCOM component.
    - CVE-2026-109777: Information disclosure in the Storage: IndexedDB component.
    - CVE-2026-109778: Privilege escalation in the WebExtensions component.
    - CVE-2026-109781: Denial-of-service in the Printing: Output component.
    - CVE-2026-109782: Mitigation bypass in the File Handling component.
    - CVE-2026-109783: Mitigation bypass in the File Handling component.

    libexpat updated:

    - CVE-2026-32776: libexpat: NULL pointer dereference when processing empty external parameter entities     inside an entity declaration value. (bsc#1259727)
    - CVE-2026-32777: libexpat: denial of service due to infinite loop in DTD content parsing. (bsc#1259712)
    - CVE-2026-32778: libexpat: NULL pointer dereference in `setContext` on retry after an out-of-memory     condition. (bsc#1259730)
    - CVE-2026-41080: libexpat: insufficient entropy, and thus hash flooding can occur via a crafted XML     document. (bsc#1262263)
    - CVE-2026-45186: libexpat: computational complexity of attribute name collision checks allows a denial of     service via moderately sized crafted XML input. (bsc#1264713)
    - CVE-2026-50219: libexpat: Use-after-free vulnerability due to lack of handler call depth tracking in     libexpat could lead to information disclosure, integrity loss, or denial of service. (bsc#1275098)
    - CVE-2026-56131: libexpat: Use-after-free vulnerability due to a lack of handler call depth tracking for     XML_ResumeParser in libexpat could lead to denial of service. (bsc#1275098)
    - CVE-2026-56132: libexpat: Heap buffer overflow in doProlog due to mishandled array reallocation in     libexpat could lead to denial of service or memory corruption. (bsc#1275098)
    - CVE-2026-56403: libexpat: Integer overflow vulnerability in the storeAtts attribute parsing function in     libexpat could lead to memory corruption. (bsc#1275098)
    - CVE-2026-56404: libexpat: Integer overflow vulnerability in the addBinding routine of libexpat could     lead to memory corruption and potential security risks. (bsc#1275098)
    - CVE-2026-56405: libexpat: Integer overflow vulnerability in libexpat could lead to memory corruption or     denial of service. (bsc#1275098)
    - CVE-2026-56406: libexpat: Integer overflow vulnerability in libexpat could lead to memory corruption or     denial of service. (bsc#1275098)
    - CVE-2026-56407: libexpat: Integer overflow vulnerability in libexpat could lead to memory corruption or     denial of service. (bsc#1275098)
    - CVE-2026-56408: libexpat: Integer overflow vulnerability in the copyString function in libexpat could     lead to memory corruption. (bsc#1275098)
    - CVE-2026-56409: libexpat: Integer overflow vulnerability in libexpat could lead to memory corruption or     denial of service. (bsc#1275098)
    - CVE-2026-56410: libexpat: Integer overflow vulnerability in the xmlwf utility of libexpat could lead to     denial of service. (bsc#1275098)
    - CVE-2026-56411: libexpat: Integer overflow vulnerability in libexpat could lead to memory corruption or     denial of service. (bsc#1275098)
    - CVE-2026-56412: libexpat: Use-after-free vulnerability due to a lack of handler call depth tracking in     libexpat could lead to denial of service or memory corruption. (bsc#1275098)
    - CVE-2026-66046: libexpat: denial of service vulnerability caused by quadratic algorithmic complexity in     the storeAtts() function in xmlparse.c. (bsc#1275736)
    - CVE-2026-72522: libexpat: Out-of-bounds read and resultant infinite loop in the Unicode processing     functions in libexpat allowed attackers to cause denial of service. (bsc#1275605)
    - CVE-2026-76641: libexpat: Out-of-bounds read vulnerability caused by a struct size mismatch in libexpat     allowed attackers to trigger memory corruption or a crash. (bsc#1275736)
    - CVE-2026-76956: libexpat: Insufficient entropy caused by misinterpretation of getentropy's return code     in libexpat allowed attackers to cause a denial of service via hash flooding attacks. (bsc#1275736)
    - CVE-2026-76957: libexpat: Use-after-free vulnerability due to lack of handler call depth tracking with     custom encoding callbacks in libexpat could lead to memory corruption. (bsc#1275736)
    - CVE-2026-93990: libexpat: Improper handling of lone high surrogates in UTF-16 encoded XML in libexpat     allowed attackers to pass unpaired surrogates or silently replace input characters. (bsc#1282347)

Tenable has extracted the preceding description block directly from the SUSE security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Oracle Linux 9 host has a package installed that is affected by multiple vulnerabilities as referenced in the ELSA-2026-93443 advisory.

    [153.5.0-1.0.1]
    - Fix prefs for new nss [Orabug: 37079813]
    - Add Oracle prefs

    [153.5.0-1]
    - Update to 153.5.0 ESR

    [140.16.0-1]
    - Update to 140.16.0 ESR

    [140.15.0-1]
    - Update to 140.15.0 ESR

    [140.14.0-1]
    - Update to 140.14.0 ESR

    [140.13.0-1]
    - Update to 140.13.0 ESR

    [140.12.0-1]
    - Update to 140.12.0 ESR

    [140.11.0-1]
    - Update to 140.11.0 ESR

    [140.10.1-1]
    - Update to 140.10.1 ESR

    [140.10.0-1]
    - Update to 140.10.0 ESR

Tenable has extracted the preceding description block directly from the Oracle Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote Redhat Enterprise Linux 9 host has a package installed that is affected by multiple vulnerabilities as referenced in the RHSA-2026:93443 advisory.

    Mozilla Thunderbird is a standalone mail and newsgroup client.

    Security Fix(es):

    * libexpat: denial of service via crafted XML input (CVE-2026-45186)

    * firefox: Mitigation bypass in the Enterprise Policies component (CVE-2026-109764)

    * firefox: Spoofing issue in the DOM: Web Serial component (CVE-2026-109770)

    * firefox: Mitigation bypass in the File Handling component (CVE-2026-109783)

    * firefox: thunderbird: Privilege escalation in the Application Update component (CVE-2026-109704)

    * firefox: Use-after-free in the XML component (CVE-2026-109718)

    * firefox: Information disclosure in the PDF Viewer component (CVE-2026-109742)

    * firefox: Incorrect boundary conditions in the JavaScript Engine component (CVE-2026-109715)

    * firefox: firefox: Sandbox escape via incorrect boundary conditions in Win32 widget (CVE-2026-109740)

    * firefox: Use-after-free in the Storage: IndexedDB component (CVE-2026-109706)

    * firefox: Use-after-free in the Crash Reporting component (CVE-2026-109713)

    * firefox: Use-after-free in the DOM: Core & HTML component (CVE-2026-109724)

    * firefox: Sandbox escape due to uninitialized memory in the DOM: Web Serial component (CVE-2026-109745)

    * firefox: Mitigation bypass in the File Handling component (CVE-2026-109782)

    * firefox: Information disclosure, privilege escalation in the Security: Process Sandboxing component     (CVE-2026-109709)

    * firefox: Sandbox escape, site isolation issue due to incorrect boundary conditions, use-after-free in     the Networking component (CVE-2026-109705)

    * firefox: Use-after-free in the Audio/Video: Playback component (CVE-2026-109738)

    * firefox: Sandbox escape due to race condition in the Networking component (CVE-2026-109757)

    * firefox: Use-after-free in the Storage: Bucket File System component (CVE-2026-109741)

    * firefox: Use-after-free in the JavaScript Engine: JIT component (CVE-2026-109729)

    * firefox: Other issue in the DOM: File component (CVE-2026-109744)

    * firefox: Incorrect boundary conditions in the JavaScript Engine component (CVE-2026-109716)

    * firefox: Race condition, use-after-free in the Graphics: CanvasWebGL component (CVE-2026-109719)

    * firefox: Incorrect boundary conditions in the Layout component (CVE-2026-109753)

    * firefox: Integer overflow in the Layout: Text and Fonts component (CVE-2026-109723)

    * firefox: Privilege escalation in the DOM: Navigation component (CVE-2026-109756)

    * firefox: JIT miscompilation in the JavaScript Engine: JIT component (CVE-2026-109733)

    * firefox: thunderbird: Mitigation bypass in the DOM: Security component (CVE-2026-109734)

    * firefox: Mitigation bypass in the File Handling component (CVE-2026-109763)

    * firefox: Sandbox escape due to incorrect boundary conditions in the Networking component     (CVE-2026-109708)

    * firefox: Use-after-free in the DOM: Bindings (WebIDL) component (CVE-2026-109717)

    * firefox: Use-after-free in the DOM: Workers component (CVE-2026-109752)

    * firefox: Race condition in the XPCOM component (CVE-2026-109776)

    * firefox: Sandbox escape due to use-after-free in the Networking component (CVE-2026-109707)

    * firefox: Mitigation bypass in the Networking: HTTP component (CVE-2026-109760)

    * firefox: JIT miscompilation in the JavaScript: WebAssembly component (CVE-2026-109720)

    * firefox: Information disclosure in the Storage: IndexedDB component (CVE-2026-109777)

    * firefox: Use-after-free in the SVG component (CVE-2026-109726)

    * firefox: Integer overflow in the Graphics component (CVE-2026-109730)

    * firefox: Use-after-free in the Audio/Video component (CVE-2026-109727)

    * firefox: Mitigation bypass in the Enterprise Policies component (CVE-2026-109737)

    * firefox: Mitigation bypass in the Enterprise Policies component (CVE-2026-109766)

    * firefox: Use-after-free in the DOM: Streams component (CVE-2026-109732)

    * firefox: Site isolation issue in the Networking component (CVE-2026-109759)

    * firefox: Privilege escalation in the WebExtensions component (CVE-2026-109778)

    * firefox: Incorrect boundary conditions in the SVG component (CVE-2026-109762)

    * firefox: Race condition, use-after-free in the Graphics: Text component (CVE-2026-109765)

    * firefox: Incorrect boundary conditions in the DOM: Editor component (CVE-2026-109754)

    * firefox: Information disclosure in the Networking component (CVE-2026-109751)

    * firefox: Use-after-free in the DOM: Core & HTML component (CVE-2026-109725)

    * firefox: Sandbox escape due to uninitialized memory in the Graphics component (CVE-2026-109712)

    * firefox: Use-after-free in the Graphics: Canvas2D component (CVE-2026-109711)

    * firefox: Frame poisoning in the Layout component (CVE-2026-109736)

    * firefox: JIT miscompilation in the JavaScript Engine: JIT component (CVE-2026-109722)

    * firefox: Information disclosure in the Networking component (CVE-2026-109767)

    * firefox: Denial-of-service in the WebRTC component (CVE-2026-109775)

    * firefox: Use-after-free in the DOM: Animation component (CVE-2026-109728)

    * firefox: Denial-of-service in the Printing: Output component (CVE-2026-109781)

    * firefox: thunderbird: Use-after-free in the Graphics: Text component (CVE-2026-109710)

    * firefox: thunderbird: Incorrect boundary conditions in the Graphics: Canvas2D component     (CVE-2026-109731)

    * firefox: Incorrect boundary conditions in the JavaScript Engine: JIT component (CVE-2026-109721)

    * firefox: Privilege escalation in the Panning and Zooming component (CVE-2026-109743)

    Bug Fix(es) and Enhancement(s):

    * Thunderbird ESR 153 rebase [rhel-9.8.z] (JIRA:RHEL-175199)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise Linux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The version of Firefox installed on the remote macOS or Mac OS X host is prior to 158.0. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2026-106 advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

The remote MiracleLinux 9 host has a package installed that is affected by multiple vulnerabilities as referenced in the AXSA:2026-2271:26 advisory.

    * libexpat: denial of service via crafted XML input (CVE-2026-45186)
      * firefox: Mitigation bypass in the Enterprise Policies component (CVE-2026-109764)
      * firefox: Spoofing issue in the DOM: Web Serial component (CVE-2026-109770)
      * firefox: Mitigation bypass in the File Handling component (CVE-2026-109783)
      * firefox: thunderbird: Privilege escalation in the Application Update component (CVE-2026-109704)
      * firefox: Use-after-free in the XML component (CVE-2026-109718)
      * firefox: Information disclosure in the PDF Viewer component (CVE-2026-109742)
      * firefox: Incorrect boundary conditions in the JavaScript Engine component (CVE-2026-109715)
      * firefox: firefox: Sandbox escape via incorrect boundary conditions in Win32 widget (CVE-2026-109740)
      * firefox: Use-after-free in the Storage: IndexedDB component (CVE-2026-109706)
      * firefox: Use-after-free in the Crash Reporting component (CVE-2026-109713)
      * firefox: Use-after-free in the DOM: Core & HTML component (CVE-2026-109724)
      * firefox: Sandbox escape due to uninitialized memory in the DOM: Web Serial component (CVE-2026-109745)
      * firefox: Mitigation bypass in the File Handling component (CVE-2026-109782)
      * firefox: Information disclosure, privilege escalation in the Security: Process Sandboxing component     (CVE-2026-109709)
      * firefox: Sandbox escape, site isolation issue due to incorrect boundary conditions, use-after-free in     the Networking component (CVE-2026-109705)
      * firefox: Use-after-free in the Audio/Video: Playback component (CVE-2026-109738)
      * firefox: Sandbox escape due to race condition in the Networking component (CVE-2026-109757)
      * firefox: Use-after-free in the Storage: Bucket File System component (CVE-2026-109741)
      * firefox: Use-after-free in the JavaScript Engine: JIT component (CVE-2026-109729)
      * firefox: Other issue in the DOM: File component (CVE-2026-109744)
      * firefox: Incorrect boundary conditions in the JavaScript Engine component (CVE-2026-109716)
      * firefox: Race condition, use-after-free in the Graphics: CanvasWebGL component (CVE-2026-109719)
      * firefox: Incorrect boundary conditions in the Layout component (CVE-2026-109753)
      * firefox: Integer overflow in the Layout: Text and Fonts component (CVE-2026-109723)
      * firefox: Privilege escalation in the DOM: Navigation component (CVE-2026-109756)
      * firefox: JIT miscompilation in the JavaScript Engine: JIT component (CVE-2026-109733)
      * firefox: thunderbird: Mitigation bypass in the DOM: Security component (CVE-2026-109734)
      * firefox: Mitigation bypass in the File Handling component (CVE-2026-109763)
      * firefox: Sandbox escape due to incorrect boundary conditions in the Networking component     (CVE-2026-109708)
      * firefox: Use-after-free in the DOM: Bindings (WebIDL) component (CVE-2026-109717)
      * firefox: Use-after-free in the DOM: Workers component (CVE-2026-109752)
      * firefox: Race condition in the XPCOM component (CVE-2026-109776)
      * firefox: Sandbox escape due to use-after-free in the Networking component (CVE-2026-109707)
      * firefox: Mitigation bypass in the Networking: HTTP component (CVE-2026-109760)
      * firefox: JIT miscompilation in the JavaScript: WebAssembly component (CVE-2026-109720)
      * firefox: Information disclosure in the Storage: IndexedDB component (CVE-2026-109777)
      * firefox: Use-after-free in the SVG component (CVE-2026-109726)
      * firefox: Integer overflow in the Graphics component (CVE-2026-109730)
      * firefox: Use-after-free in the Audio/Video component (CVE-2026-109727)
      * firefox: Mitigation bypass in the Enterprise Policies component (CVE-2026-109737)
      * firefox: Mitigation bypass in the Enterprise Policies component (CVE-2026-109766)
      * firefox: Use-after-free in the DOM: Streams component (CVE-2026-109732)
      * firefox: Site isolation issue in the Networking component (CVE-2026-109759)
      * firefox: Privilege escalation in the WebExtensions component (CVE-2026-109778)
      * firefox: Incorrect boundary conditions in the SVG component (CVE-2026-109762)
      * firefox: Race condition, use-after-free in the Graphics: Text component (CVE-2026-109765)
      * firefox: Incorrect boundary conditions in the DOM: Editor component (CVE-2026-109754)
      * firefox: Information disclosure in the Networking component (CVE-2026-109751)
      * firefox: Use-after-free in the DOM: Core & HTML component (CVE-2026-109725)
      * firefox: Sandbox escape due to uninitialized memory in the Graphics component (CVE-2026-109712)
      * firefox: Use-after-free in the Graphics: Canvas2D component (CVE-2026-109711)
      * firefox: Frame poisoning in the Layout component (CVE-2026-109736)
      * firefox: JIT miscompilation in the JavaScript Engine: JIT component (CVE-2026-109722)
      * firefox: Information disclosure in the Networking component (CVE-2026-109767)
      * firefox: Denial-of-service in the WebRTC component (CVE-2026-109775)
      * firefox: Use-after-free in the DOM: Animation component (CVE-2026-109728)
      * firefox: Denial-of-service in the Printing: Output component (CVE-2026-109781)
      * firefox: thunderbird: Use-after-free in the Graphics: Text component (CVE-2026-109710)
      * firefox: thunderbird: Incorrect boundary conditions in the Graphics: Canvas2D component     (CVE-2026-109731)
      * firefox: Incorrect boundary conditions in the JavaScript Engine: JIT component (CVE-2026-109721)
      * firefox: Privilege escalation in the Panning and Zooming component (CVE-2026-109743)     Bug Fix(es) and Enhancement(s):
      * Thunderbird ESR 153 rebase [rhel-9.8.z] (JIRA:RHEL-175199)

Tenable has extracted the preceding description block directly from the MiracleLinux security advisory.

Note that Nessus has not tested for these issues but has instead relied only on the application's self-reported version number.

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
365349	Mozilla Thunderbird < 153.5	Nessus	Windows	2026/10/13	2026/10/26	critical
365635	Debian dsa-6560 : firefox-esr - security update	Nessus	Debian Local Security Checks	2026/10/14	2026/10/26	critical
372151	Debian dla-4863 : thunderbird - security update	Nessus	Debian Local Security Checks	2026/10/26	2026/10/26	critical
372409	Oracle Linux 10 : firefox (ELSA-2026-89758)	Nessus	Oracle Linux Local Security Checks	2026/10/27	2026/10/27	high
374789	Rocky Linux 10.2 [CIQ] Security Update: firefox / firefox-debuginfo / firefox-debugsource Multiple Vulnerabilities (crlsa-2026_89758)	Nessus	Rocky Linux Local Security Checks	2026/11/1	2026/11/1	high
374387	Amazon Linux 2 : thunderbird (ALAS-2026-4057)	Nessus	Amazon Linux Local Security Checks	2026/10/30	2026/10/30	high
374551	RockyLinux 8 : firefox (RLSA-2026:89756)	Nessus	Rocky Linux Local Security Checks	2026/10/31	2026/10/31	high
370428	openSUSE 16: MozillaFirefox / MozillaFirefox-branding-upstream / etc (openSUSE-SU-2026:22139-1)	Nessus	SuSE Local Security Checks	2026/10/22	2026/10/23	high
371085	SUSE SLES16: MozillaFirefox / MozillaFirefox-devel / etc (SUSE-SU-2026:24260-1)	Nessus	SuSE Local Security Checks	2026/10/23	2026/10/23	high
371091	SUSE SLED15: MozillaFirefox / MozillaFirefox-devel / etc (SUSE-SU-2026:4834-1)	Nessus	SuSE Local Security Checks	2026/10/23	2026/10/23	high
375322	Oracle Linux 9 : thunderbird (ELSA-2026-93443)	Nessus	Oracle Linux Local Security Checks	2026/11/2	2026/11/2	high
374920	RHEL 9 : thunderbird (RHSA-2026:93443)	Nessus	Red Hat Local Security Checks	2026/11/2	2026/11/5	high
365311	Mozilla Firefox < 158.0	Nessus	MacOS X Local Security Checks	2026/10/13	2026/10/27	critical
376806	MiracleLinux 9 : thunderbird-153.5.0-1.el9_8.ML.1 (AXSA:2026-2271:26)	Nessus	Miracle Linux Local Security Checks	2026/11/6	2026/11/6	critical

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