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

  - An exploitable integer truncation vulnerability exists within the MPEG-4 decoding functionality of the     GPAC Project on Advanced Content library v1.0.1. When processing the 'hdlr' FOURCC code, a specially     crafted MPEG-4 input can cause an improper memory allocation resulting in a heap-based buffer overflow     that causes memory corruption. An attacker can convince a user to open a video to trigger this     vulnerability. (CVE-2021-21861)

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

The remote Debian 11 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-4966 advisory.

    Multiple security issues were discovered in the GPAC multimedia framework which could result in denial of     service or the execution of arbitrary code. The oldstable distribution (buster) is not affected. For the     stable distribution (bullseye), these problems have been fixed in version 1.0.1+dfsg1-4+deb11u1. We     recommend that you upgrade your gpac packages. For the detailed security status of gpac please refer to     its security tracker page at: https://security-tracker.debian.org/tracker/gpac

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 host is affected by the vulnerability described in GLSA-202408-21 (GPAC: Multiple Vulnerabilities)

    Multiple vulnerabilities have been discovered in GPAC. Please review the CVE identifiers referenced below     for details.

Tenable has extracted the preceding description block directly from the Gentoo 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.

ID	Name	Product	Family	Published	Updated	Severity
251069	Linux Distros Unpatched Vulnerability : CVE-2021-21861	Nessus	Misc.	8/18/2025	8/18/2025	high
152943	Debian DSA-4966-1 : gpac - security update	Nessus	Debian Local Security Checks	9/1/2021	1/24/2025	high
205345	GLSA-202408-21 : GPAC: Multiple Vulnerabilities	Nessus	Gentoo Local Security Checks	8/10/2024	9/30/2024	critical

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