c-ares is an asynchronous resolver library. Versions 1.32.3 through 1.34.5 terminate a query after maximum attempts when using read_answer() and process_answer(), which can cause a Denial of Service. This issue is fixed in version 1.34.6.

According to its self-reported version, the Nessus Network Monitor running on the remote host is prior to 6.5.3. It is, therefore, affected by multiple vulnerabilities as referenced in the TNS-2026-02 advisory.

  - A vulnerability was found in SQLite SQLite3 up to 3.43.0 and classified as critical. This issue affects     the function sessionReadRecord of the file ext/session/sqlite3session.c of the component make alltest     Handler. The manipulation leads to heap-based buffer overflow. It is recommended to apply a patch to fix     this issue. The associated identifier of this vulnerability is VDB-248999. (CVE-2023-7104)

  - A use-after-free vulnerability was found in libxml2. This issue occurs when parsing XPath elements under     certain circumstances when the XML schematron has the <sch:name path=.../> schema elements. This flaw     allows a malicious actor to craft a malicious XML document used as input for libxml, resulting in the     program's crash using libxml or other possible undefined behaviors. (CVE-2025-49794)

  - A vulnerability was found in libxml2. Processing certain sch:name elements from the input XML file can     trigger a memory corruption issue. This flaw allows an attacker to craft a malicious XML input file that     can lead libxml to crash, resulting in a denial of service or other possible undefined behavior due to     sensitive data being corrupted in memory. (CVE-2025-49796)

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

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2025-1347 advisory.

    Use after free due to connection being cleaned up after error (CVE-2025-62408)

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

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

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2025-1346 advisory.

    Use after free due to connection being cleaned up after error (CVE-2025-62408)

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

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

It is, therefore, affected by a vulnerability as referenced in the ALAS2023-2025-1348 advisory.

    Use after free due to connection being cleaned up after error (CVE-2025-62408)

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

Note that Nessus has not tested for this issue 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 a vulnerability as referenced in the dsa-6084 advisory.

    - -------------------------------------------------------------------------     Debian Security Advisory DSA-6084-1                   security@debian.org     https://www.debian.org/security/                     Salvatore Bonaccorso     December 18, 2025                     https://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package        : c-ares     CVE ID         : CVE-2025-62408

    It was discovered that c-ares, a library that performs DNS requests and     name resolution asynchronously, does not properly handle termination of     queries which may result in denial of service.

    For the stable distribution (trixie), this problem has been fixed in     version 1.34.5-1+deb13u1.

    We recommend that you upgrade your c-ares packages.

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

    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 this issue but has instead relied only on the application's self-reported version number.

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by a vulnerability as referenced in the 1adf9ece-d4a3-11f0-83a2-843a4b343614 advisory.

    https://github.com/c-ares/c-ares/security/advisories/GHSA-jq53-42q6-pqr5 reports:
    c-ares is an asynchronous resolver library.  Versions               1.32.3 through 1.34.5 terminate a query after maximum               attempts when using read_answer() and process_answer(),               which can cause a Denial of Service.  This issue is fixed in               version 1.34.6.

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

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

The remote Ubuntu 25.04 / 25.10 host has packages installed that are affected by a vulnerability as referenced in the USN-7925-1 advisory.

    It was discovered that c-ares incorrectly handled terminating certain queries after a maximum number of     attempts. An attacker could possibly use this issue to cause c-ares to crash, resulting in a denial of     service.

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

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

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

  - c-ares is an asynchronous resolver library. Versions 1.32.3 through 1.34.5 terminate a query after maximum     attempts when using read_answer() and process_answer(), which can cause a Denial of Service. This issue is     fixed in version 1.34.6. (CVE-2025-62408)

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

ID	Name	Product	Family	Severity
297102	Nessus Network Monitor < 6.5.3 Multiple Vulnerabilities (TNS-2026-02)	Nessus	Misc.	critical
282385	Amazon Linux 2023 : nodejs22, nodejs22-devel, nodejs22-full-i18n (ALAS2023-2025-1347)	Nessus	Amazon Linux Local Security Checks	medium
282380	Amazon Linux 2023 : nodejs20, nodejs20-devel, nodejs20-full-i18n (ALAS2023-2025-1346)	Nessus	Amazon Linux Local Security Checks	medium
282378	Amazon Linux 2023 : nodejs24, nodejs24-devel, nodejs24-full-i18n (ALAS2023-2025-1348)	Nessus	Amazon Linux Local Security Checks	medium
279112	Debian dsa-6084 : libc-ares-dev - security update	Nessus	Debian Local Security Checks	medium
278588	FreeBSD : c-ares -- Use After Free (1adf9ece-d4a3-11f0-83a2-843a4b343614)	Nessus	FreeBSD Local Security Checks	medium
278512	Ubuntu 25.04 / 25.10 : c-ares vulnerability (USN-7925-1)	Nessus	Ubuntu Local Security Checks	medium
277772	Linux Distros Unpatched Vulnerability : CVE-2025-62408	Nessus	Misc.	medium

Detections

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CVE-2025-62408

medium

Tenable Plugins

critical

medium

medium

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medium

medium

medium

medium