GStreamer RIFF Palette Integer Overflow Remote Code Execution Vulnerability. This vulnerability allows remote attackers to execute arbitrary code on affected installations of GStreamer. Interaction with this library is required to exploit this vulnerability but attack vectors may vary depending on the implementation. The specific flaw exists within the handling of palette data in AVI files. The issue results from the lack of proper validation of user-supplied data, which can result in an integer overflow before writing to memory. An attacker can leverage this vulnerability to execute code in the context of the current process. Was ZDI-CAN-28854.

Multiple Vulnerabilities in GStreamer

The remote Debian 12 / 13 host has packages installed that are affected by a vulnerability as referenced in the dsa-6167 advisory.

    - -------------------------------------------------------------------------     Debian Security Advisory DSA-6167-1                   security@debian.org     https://www.debian.org/security/                       Moritz Muehlenhoff     March 17, 2026                        https://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package        : gst-plugins-base1.0     CVE ID         : CVE-2026-2921

    An integer overflow was discovered in the RIFF parser of the GStreamer     media framework, which may result in denial of service or potentially the     execution of arbitrary code if a malformed media file is opened.

    For the oldstable distribution (bookworm), this problem has been fixed     in version 1.22.0-3+deb12u6.

    For the stable distribution (trixie), this problem has been fixed in     version 1.26.2-1+deb13u1.

    We recommend that you upgrade your gst-plugins-base1.0 packages.

    For the detailed security status of gst-plugins-base1.0 please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/gst-plugins-base1.0

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

  - GStreamer RIFF Palette Integer Overflow Remote Code Execution Vulnerability. This vulnerability allows     remote attackers to execute arbitrary code on affected installations of GStreamer. Interaction with this     library is required to exploit this vulnerability but attack vectors may vary depending on the     implementation. The specific flaw exists within the handling of palette data in AVI files. The issue     results from the lack of proper validation of user-supplied data, which can result in an integer overflow     before writing to memory. An attacker can leverage this vulnerability to execute code in the context of     the current process. Was ZDI-CAN-28854. (CVE-2026-2921)

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

The version of FreeBSD installed on the remote host is prior to tested version. It is, therefore, affected by multiple vulnerabilities as referenced in the 791d4b29-19fb-11f1-87cc-e73692421fef advisory.

    The GStreamer project reports multiple security vulnerabilities fixed in the 1.28.1 release:
    Twelve security vulnerabilities were addressed, including:
    These could lead to application crashes or potentially arbitrary code execution.

Tenable has extracted the preceding description block directly from the FreeBSD 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	Severity
302816	Debian dsa-6167 : gir1.2-gst-plugins-base-1.0 - security update	Nessus	Debian Local Security Checks	high
301746	Linux Distros Unpatched Vulnerability : CVE-2026-2921	Nessus	Misc.	high
301464	FreeBSD : gstreamer1 -- multiple vulnerabilities (791d4b29-19fb-11f1-87cc-e73692421fef)	Nessus	FreeBSD Local Security Checks	critical

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CVE-2026-2921

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