The version of Thunderbird installed on the remote macOS or Mac OS X host is prior to 140.16. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2026-95 advisory.

  - Privilege escalation due to incorrect boundary conditions in the Graphics: WebRender component. This     vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, Firefox ESR 153.3,     Thunderbird 156, and Thunderbird 140.16. (CVE-2026-92020)

  - A maliciously constructed mail header could lead to multiple fields being parsed as one, or potential     memory safety violations. (CVE-2026-92238)

  - A maliciously constructed IMAP line could cause an out-of-bounds buffer read. (CVE-2026-92239)

  - A malicious or compromised IMAP server can trigger an out-of-bounds read in the IMAP response parser by     sending an untagged ' ID' response, crashing Thunderbird. The affected parsing path is reachable before     authentication. (CVE-2026-92240)

  - Use-after-free in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 156,     Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, and Thunderbird 140.16. (CVE-2026-92005)

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-6503 advisory.

    - -------------------------------------------------------------------------     Debian Security Advisory DSA-6503-1                   security@debian.org     https://www.debian.org/security/                       Moritz Muehlenhoff     September 16, 2026                    https://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package        : thunderbird     CVE ID         : CVE-2026-92005 CVE-2026-92006 CVE-2026-92007 CVE-2026-92008                      CVE-2026-92009 CVE-2026-92010 CVE-2026-92011 CVE-2026-92012                      CVE-2026-92013 CVE-2026-92014 CVE-2026-92015 CVE-2026-92016                      CVE-2026-92017 CVE-2026-92018 CVE-2026-92019 CVE-2026-92020                      CVE-2026-92021 CVE-2026-92022 CVE-2026-92023 CVE-2026-92024                      CVE-2026-92025 CVE-2026-92026 CVE-2026-92027 CVE-2026-92028                      CVE-2026-92029 CVE-2026-92030 CVE-2026-92031 CVE-2026-92032                      CVE-2026-92238 CVE-2026-92239 CVE-2026-92240

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

    For the stable distribution (trixie), these problems have been fixed in     version 1:140.16.0esr-1~deb13u1.

    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 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-4782 advisory.

    - -------------------------------------------------------------------------     Debian LTS Advisory DLA-4782-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/               Emilio Pozuelo Monfort     September 17, 2026                            https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : thunderbird     Version        : 1:140.16.0esr-1~deb12u1     CVE ID         : CVE-2026-92005 CVE-2026-92006 CVE-2026-92007 CVE-2026-92008                      CVE-2026-92009 CVE-2026-92010 CVE-2026-92011 CVE-2026-92012                      CVE-2026-92013 CVE-2026-92014 CVE-2026-92015 CVE-2026-92016                      CVE-2026-92017 CVE-2026-92018 CVE-2026-92019 CVE-2026-92020                      CVE-2026-92021 CVE-2026-92022 CVE-2026-92023 CVE-2026-92024                      CVE-2026-92025 CVE-2026-92026 CVE-2026-92027 CVE-2026-92028                      CVE-2026-92029 CVE-2026-92030 CVE-2026-92031 CVE-2026-92032                      CVE-2026-92238 CVE-2026-92239 CVE-2026-92240

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

    For Debian 12 bookworm, these problems have been fixed in version     1:140.16.0esr-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 version of Firefox ESR installed on the remote Windows host is prior to 140.16. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2026-92 advisory.

  - Privilege escalation due to incorrect boundary conditions in the Graphics: WebRender component. This     vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, and Firefox ESR 153.3.
    (CVE-2026-92020)

  - Privilege escalation in the DOM: Service Workers component. This vulnerability was fixed in Firefox 156,     Firefox ESR 115.41, Firefox ESR 140.16, and Firefox ESR 153.3. (CVE-2026-92017)

  - Use-after-free in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 156,     Firefox ESR 140.16, and Firefox ESR 153.3. (CVE-2026-92005)

  - Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This     vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, and Firefox ESR 153.3.
    (CVE-2026-92006, CVE-2026-92007, CVE-2026-92008, CVE-2026-92009, CVE-2026-92010, CVE-2026-92011,     CVE-2026-92012, CVE-2026-92013)

  - Privilege escalation due to incorrect boundary conditions in the Graphics component. This vulnerability     was fixed in Firefox ESR 115.41 and Firefox ESR 140.16. (CVE-2026-92014)

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 Windows host is prior to 153.3. It is, therefore, affected by multiple vulnerabilities as referenced in the mfsa2026-96 advisory.

  - Privilege escalation in the Enterprise Policies component. This vulnerability was fixed in Firefox 156,     Firefox ESR 153.3, Thunderbird 156, and Thunderbird 153.3. (CVE-2026-92073)

  - A maliciously constructed mail header could lead to multiple fields being parsed as one, or potential     memory safety violations. (CVE-2026-92238)

  - A maliciously constructed IMAP line could cause an out-of-bounds buffer read. (CVE-2026-92239)

  - A malicious or compromised IMAP server can trigger an out-of-bounds read in the IMAP response parser by     sending an untagged ' ID' response, crashing Thunderbird. The affected parsing path is reachable before     authentication. (CVE-2026-92240)

  - Use-after-free in the Audio/Video: Web Codecs component. This vulnerability was fixed in Firefox 156,     Firefox ESR 140.16, Firefox ESR 153.3, Thunderbird 156, Thunderbird 140.16, and Thunderbird 153.3.
    (CVE-2026-92005)

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-4781 advisory.

    - -------------------------------------------------------------------------     Debian LTS Advisory DLA-4781-1                debian-lts@lists.debian.org     https://www.debian.org/lts/security/               Emilio Pozuelo Monfort     September 17, 2026                            https://wiki.debian.org/LTS
    - -------------------------------------------------------------------------

    Package        : firefox-esr     Version        : 140.16.0esr-1~deb12u1     CVE ID         : CVE-2026-92005 CVE-2026-92006 CVE-2026-92007 CVE-2026-92008                      CVE-2026-92009 CVE-2026-92010 CVE-2026-92011 CVE-2026-92012                      CVE-2026-92013 CVE-2026-92014 CVE-2026-92015 CVE-2026-92016                      CVE-2026-92017 CVE-2026-92018 CVE-2026-92019 CVE-2026-92020                      CVE-2026-92021 CVE-2026-92022 CVE-2026-92023 CVE-2026-92024                      CVE-2026-92025 CVE-2026-92026 CVE-2026-92027 CVE-2026-92028                      CVE-2026-92029 CVE-2026-92030 CVE-2026-92031 CVE-2026-92032

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

    For Debian 12 bookworm, these problems have been fixed in version     140.16.0esr-1~deb12u1.

    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 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.

ID	名称	产品	系列	发布时间	最近更新时间	严重程度
346178	Mozilla Thunderbird < 140.16	Nessus	MacOS X Local Security Checks	2026/9/16	2026/9/16	high
346455	Debian dsa-6503 : thunderbird - security update	Nessus	Debian Local Security Checks	2026/9/16	2026/9/16	high
346860	Debian dla-4782 : thunderbird - security update	Nessus	Debian Local Security Checks	2026/9/17	2026/9/17	high
345907	Mozilla Firefox ESR < 140.16	Nessus	Windows	2026/9/15	2026/9/15	high
346320	Mozilla Thunderbird < 153.3	Nessus	Windows	2026/9/16	2026/9/16	high
346859	Debian dla-4781 : firefox-esr - security update	Nessus	Debian Local Security Checks	2026/9/17	2026/9/17	high

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