The Linux/Unix host has one or more packages installed that are impacted by a vulnerability without a vendor supplied patch available.

  - NLnet Labs Unbound 1.14.0 up to and including version 1.25.0 has a vulnerability that results in heap     overflow when encoding multiple NSID and/or DNS Cookie EDNS and/or EDNS Padding options in the reply     packet. The relevant options ('nsid', 'answer-cookie', 'pad-responses' (default)) need to be enabled for     the vulnerability to be exploited. An adversary who can query Unbound can exploit the vulnerability by     attaching multiple NSID and/or DNS Cookie EDNS and/or EDNS Padding options to the query. A flaw in the     size calculation of the EDNS field truncates the correct value which allows the encoder to overflow the     available space when writing. Those two combined lead to a heap overflow write of Unbound controlled data     and eventually a crash. Unbound 1.25.1 contains a patch with a fix to de-duplicate the EDNS options and a     fix to prevent truncation of the EDNS field size calculation. (CVE-2026-42944)

Note that Nessus relies on the presence of the package as reported by the vendor.

The remote Ubuntu 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS host has packages installed that are affected by multiple vulnerabilities as referenced in the USN-8282-1 advisory.

    Andrew Griffiths discovered that Unbound did not properly handle certain DNSCrypt packets. A remote     attacker could possibly use this issue to cause Unbound to crash, resulting in a denial of service.
    (CVE-2026-32792)

    Qifan Zhang discovered that Unbound incorrectly handled DNSSEC validation in certain situations. A remote     attacker could possibly use this issue to execute arbitrary code. This issue only affected Ubuntu 24.04     LTS, Ubuntu 25.10, and Ubuntu 26.04 LTS. (CVE-2026-33278)

    Qifan Zhang discovered that Unbound incorrectly handled certain ghost domain name records. A remote     attacker could possibly use this issue to cause a denial of service. This issue only affected Ubuntu 24.04     LTS, Ubuntu 25.10, and Ubuntu 26.04 LTS. (CVE-2026-40622)

    Qifan Zhang discovered that Unbound did not properly limit processing of long EDNS option lists. A remote     attacker could possibly use this issue to cause Unbound to use excessive resources, leading to a denial of     service. (CVE-2026-41292)

    Qifan Zhang discovered that Unbound incorrectly handled jostle logic under certain circumstances. A remote     attacker could possibly use this issue to cause Unbound to use excessive resources, leading to a denial of     service. (CVE-2026-42534)

    Qifan Zhang discovered that Unbound did not properly bound NSEC3 hash calculations. A remote attacker     could possibly use this issue to cause Unbound to use excessive resources, leading to a denial of service.
    (CVE-2026-42923)

    Qifan Zhang discovered that Unbound incorrectly handled multiple EDNS options in certain situations. A     remote attacker could possibly use this issue to cause Unbound to crash, resulting in a denial of service,     or execute arbitrary code. This issue only affected Ubuntu 24.04 LTS, Ubuntu 25.10, and Ubuntu 26.04 LTS.
    (CVE-2026-42944)

    Qifan Zhang discovered that Unbound incorrectly handled DNSSEC validation of malicious content. A remote     attacker could possibly use this issue to cause Unbound to crash, resulting in a denial of service.
    (CVE-2026-42959)

    TaoFei Guo, Yang Luo, and JianJun Chen discovered that Unbound incorrectly handled delegation processing     in certain situations. A remote attacker could possibly use this issue to poison the DNS cache and obtain     sensitive information. (CVE-2026-42960)

    Qifan Zhang discovered that Unbound did not properly bound name compression in certain cases. A remote     attacker could possibly use this issue to cause Unbound to use excessive resources, leading to a denial of     service. (CVE-2026-44390)

    Qifan Zhang discovered that Unbound had a use-after-free issue in RPZ handling. A remote attacker could     possibly use this issue to cause Unbound to crash, resulting in a denial of service, or execute arbitrary     code. This issue only affected Ubuntu 24.04 LTS, Ubuntu 25.10, and Ubuntu 26.04 LTS. (CVE-2026-44608)

Tenable has extracted the preceding description block directly from the Ubuntu 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 AOS installed on the remote host is prior to 7.6. It is, therefore, affected by multiple vulnerabilities as referenced in the NXSA-AOS-7.6 advisory.

  - NLnet Labs Unbound 1.19.1 up to and including version 1.25.0 has a vulnerability in the DNSSEC validator     that enables denial of service and possible remote code execution as a result of deep copying a data     structure and erroneously overwriting a destination pointer. An adversary can exploit the vulnerability by     controlling a malicious signed zone and querying a vulnerable Unbound. When DS sub-queries need to suspend     validation due to NSEC3 computational budget exhaustion (introduced in Unbound 1.19.1), Unbound deep-     copies response messages to preserve them across memory region teardown. A struct-assignment bug     overwrites the destination's pointer with the source's pointer. After the sub-query region is freed, the     resumed validator dereferences this dangling pointer, triggering a crash or potentially enabling arbitrary     code execution. Unbound 1.25.1 contains a patch with a fix to preserve the correct pointer when deep     copying the data structure. (CVE-2026-33278)

  - A vulnerability has been found in GNU Binutils 2.45. The affected element is the function elf_swap_shdr in     the library bfd/elfcode.h of the component Linker. The manipulation leads to heap-based buffer overflow.
    The attack must be carried out locally. The exploit has been disclosed to the public and may be used. The     identifier of the patch is 9ca499644a21ceb3f946d1c179c38a83be084490. To fix this issue, it is recommended     to deploy a patch. The code maintainer replied with [f]ixed for 2.46. (CVE-2025-11083)

  - A heap-based buffer overflow problem was found in glib through an incorrect calculation of buffer size in     the g_escape_uri_string() function. If the string to escape contains a very large number of unacceptable     characters (which would need escaping), the calculation of the length of the escaped string could     overflow, leading to a potential write off the end of the newly allocated string. (CVE-2025-13601)

  - Vim is an open source, command line text editor. Prior to version 9.1.1552, a path traversal issue in     Vim's tar.vim plugin can allow overwriting of arbitrary files when opening specially crafted tar archives.
    Impact is low because this exploit requires direct user interaction. However, successfully exploitation     can lead to overwriting sensitive files or placing executable code in privileged locations, depending on     the permissions of the process editing the archive. The victim must edit such a file using Vim which will     reveal the filename and the file content, a careful user may suspect some strange things going on.
    Successful exploitation could results in the ability to execute arbitrary commands on the underlying     operating system. Version 9.1.1552 contains a patch for the vulnerability. (CVE-2025-53905)

  - Vim is an open source, command line text editor. Prior to version 9.1.1551, a path traversal issue in     Vim's zip.vim plugin can allow overwriting of arbitrary files when opening specially crafted zip archives.
    Impact is low because this exploit requires direct user interaction. However, successfully exploitation     can lead to overwriting sensitive files or placing executable code in privileged locations, depending on     the permissions of the process editing the archive. The victim must edit such a file using Vim which will     reveal the filename and the file content, a careful user may suspect some strange things going on.
    Successful exploitation could results in the ability to execute arbitrary commands on the underlying     operating system. Version 9.1.1551 contains a patch for the vulnerability. (CVE-2025-53906)

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
315760	Linux Distros Unpatched Vulnerability : CVE-2026-42944	Nessus	Misc.	2026/5/20	2026/9/2	high
316076	Ubuntu 22.04 LTS / 24.04 LTS / 25.10 / 26.04 LTS : Unbound vulnerabilities (USN-8282-1)	Nessus	Ubuntu Local Security Checks	2026/5/21	2026/5/21	critical
328839	Nutanix AOS : Multiple Vulnerabilities (NXSA-AOS-7.6)	Nessus	Misc.	2026/7/21	2026/8/24	critical

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