A denial of service vulnerability was found in GStreamer's AV1 codec parser in gst-plugins-bad. The gst_av1_parser_parse_tile_list_obu() function passes a byte count to a bit-reader API that expects a bit count, causing parser desynchronization. A remote attacker could trick a user into opening a specially crafted AV1 media file, triggering an assertion abort and causing the application to crash.

amazon_alas ALAS2023-2026-1917: Amazon Linux 2023 Security Advisory:ALAS2023-2026-1917

The remote AlmaLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:36834 advisory.

    * gstreamer1-plugins-bad-free: GStreamer: Denial of service via AV1 tile_list_obu parser byte/bit     confusion (CVE-2026-52718)
      * gstreamer1-plugins-bad-free: GStreamer: Out-of-bounds read via JPEG segment length validation in VA     decoder (CVE-2026-52719)
      * gstreamer1-plugins-bad-free: GStreamer: Heap buffer overflow via crafted VNC server rectangle in     librfb (CVE-2026-52720)
      * gstreamer1-plugins-bad-free: GStreamer: Signed integer overflow in VMnc decoder cursor payload     handling (CVE-2026-52722)

Tenable has extracted the preceding description block directly from the AlmaLinux 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 RockyLinux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:36834 advisory.

    * gstreamer1-plugins-bad-free: GStreamer: Denial of service via AV1 tile_list_obu parser byte/bit     confusion (CVE-2026-52718)

    * gstreamer1-plugins-bad-free: GStreamer: Out-of-bounds read via JPEG segment length validation in VA     decoder (CVE-2026-52719)

    * gstreamer1-plugins-bad-free: GStreamer: Heap buffer overflow via crafted VNC server rectangle in librfb     (CVE-2026-52720)

    * gstreamer1-plugins-bad-free: GStreamer: Signed integer overflow in VMnc decoder cursor payload handling     (CVE-2026-52722)

Tenable has extracted the preceding description block directly from the RockyLinux 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 RockyLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RLSA-2026:36749 advisory.

    * gstreamer1-plugins-bad-free: GStreamer: Denial of service via AV1 tile_list_obu parser byte/bit     confusion (CVE-2026-52718)

    * gstreamer1-plugins-bad-free: GStreamer: Out-of-bounds read via JPEG segment length validation in VA     decoder (CVE-2026-52719)

    * gstreamer1-plugins-bad-free: GStreamer: Heap buffer overflow via crafted VNC server rectangle in librfb     (CVE-2026-52720)

    * gstreamer1-plugins-bad-free: GStreamer: Signed integer overflow in VMnc decoder cursor payload handling     (CVE-2026-52722)

Tenable has extracted the preceding description block directly from the RockyLinux 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 AlmaLinux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the ALSA-2026:36749 advisory.

    * gstreamer1-plugins-bad-free: GStreamer: Denial of service via AV1 tile_list_obu parser byte/bit     confusion (CVE-2026-52718)
      * gstreamer1-plugins-bad-free: GStreamer: Out-of-bounds read via JPEG segment length validation in VA     decoder (CVE-2026-52719)
      * gstreamer1-plugins-bad-free: GStreamer: Heap buffer overflow via crafted VNC server rectangle in     librfb (CVE-2026-52720)
      * gstreamer1-plugins-bad-free: GStreamer: Signed integer overflow in VMnc decoder cursor payload     handling (CVE-2026-52722)

Tenable has extracted the preceding description block directly from the AlmaLinux 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 Oracle Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the ELSA-2026-36834 advisory.

    - Sync with c9s release -5..-7: fix for CVE-2026-2923, CVE-2026-3082       in dvbsuboverlay and jpegparser       Resolves: RHEL-156242, RHEL-156255
    - Fix bytes/bits confusion in AV1 tile data size parsing       (CVE-2026-52718)       Resolves: RHEL-184388
    - Fix for CVE-2026-52719: vajpegdecoder out-of-bounds read       Resolves: RHEL-184403
    - Fix integer overflows in vmnc decoder (CVE-2026-52722)       Resolves: RHEL-184422
    - Fix for CVE-2026-52720: validate framebuffer update rectangles       in librfb plugin       Resolves: RHEL-184459
    - fix for CVE-2025-3887       Resolves: RHEL-93059

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

The remote Redhat Enterprise Linux 9 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:36834 advisory.

    GStreamer is a streaming media framework based on graphs of filters which operate on media data. The     gstreamer1-plugins-bad-free package contains a collection of plug-ins for GStreamer.

    Security Fix(es):

    * gstreamer1-plugins-bad-free: GStreamer: Denial of service via AV1 tile_list_obu parser byte/bit     confusion (CVE-2026-52718)

    * gstreamer1-plugins-bad-free: GStreamer: Out-of-bounds read via JPEG segment length validation in VA     decoder (CVE-2026-52719)

    * gstreamer1-plugins-bad-free: GStreamer: Heap buffer overflow via crafted VNC server rectangle in librfb     (CVE-2026-52720)

    * gstreamer1-plugins-bad-free: GStreamer: Signed integer overflow in VMnc decoder cursor payload handling     (CVE-2026-52722)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise 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.

The remote Redhat Enterprise Linux 10 host has packages installed that are affected by multiple vulnerabilities as referenced in the RHSA-2026:36749 advisory.

    GStreamer is a streaming media framework based on graphs of filters which operate on media data. The     gstreamer1-plugins-bad-free package contains a collection of plug-ins for GStreamer.

    Security Fix(es):

    * gstreamer1-plugins-bad-free: GStreamer: Denial of service via AV1 tile_list_obu parser byte/bit     confusion (CVE-2026-52718)

    * gstreamer1-plugins-bad-free: GStreamer: Out-of-bounds read via JPEG segment length validation in VA     decoder (CVE-2026-52719)

    * gstreamer1-plugins-bad-free: GStreamer: Heap buffer overflow via crafted VNC server rectangle in librfb     (CVE-2026-52720)

    * gstreamer1-plugins-bad-free: GStreamer: Signed integer overflow in VMnc decoder cursor payload handling     (CVE-2026-52722)

    For more details about the security issue(s), including the impact, a CVSS score, acknowledgments, and     other related information, refer to the CVE page(s) listed in the References section.

Tenable has extracted the preceding description block directly from the Red Hat Enterprise 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.

The version of gstreamer1-plugins-bad-free installed on the remote host is prior to 1.18.4-5. It is, therefore, affected by multiple vulnerabilities as referenced in the ALAS2-2026-3790 advisory.

    A denial of service vulnerability was found in GStreamer's AV1 codec parser in gst-plugins-bad. The     gst_av1_parser_parse_tile_list_obu() function passes a byte count to a bit-reader API that expects a bit     count, causing parser desynchronization. A remote attacker could trick a user into opening a specially     crafted AV1 media file, triggering an assertion abort and causing the application to crash.
    (CVE-2026-52718)

    Multiple out-of-bounds read vulnerabilities were found in GStreamer's pcapparse element. Malformed PCAP     records can trigger reads beyond buffer boundaries during IPv4/TCP header parsing. This element is     primarily used in debugging pipelines, limiting real-world exposure. A local attacker could trick a user     into processing a specially crafted PCAP file, potentially leading to a crash or information disclosure.
    (CVE-2026-52721)

    A signed integer overflow vulnerability was found in GStreamer's VMnc decoder. A crafted VMnc stream with     large cursor dimensions can overflow signed integer payload-size arithmetic, bypassing a length check and     leading to out-of-bounds reads. A remote attacker could trick a user into opening a specially crafted VMnc     file, potentially causing a crash or information disclosure. (CVE-2026-52722)

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

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

An update of the gst package has been released.

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 4e82a0e6-6801-42c6-8fb6-91b6b275a9e1 advisory.

    The GStreamer project reports:
    Multiple security issues were identified and fixed in the GStreamer framework.

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.

The remote Debian 13 host has packages installed that are affected by multiple vulnerabilities as referenced in the dsa-6362 advisory.

    - -------------------------------------------------------------------------     Debian Security Advisory DSA-6362-1                   security@debian.org     https://www.debian.org/security/                       Moritz Muehlenhoff     June 23, 2026                         https://www.debian.org/security/faq
    - -------------------------------------------------------------------------

    Package        : gst-plugins-bad1.0     CVE ID         : CVE-2026-52718 CVE-2026-52719 CVE-2026-53701

    Multiple security vulnerabilities were discovered in plugins for     the GStreamer media framework and its codecs and demuxers, which     may result in denial of service or potentially the execution of     arbitrary code if a malformed media file is opened.

    For the stable distribution (trixie), these problems have been fixed in     version 1.26.2-3+deb13u2.

    We recommend that you upgrade your gst-plugins-bad1.0 packages.

    For the detailed security status of gst-plugins-bad1.0 please refer to     its security tracker page at:
    https://security-tracker.debian.org/tracker/gst-plugins-bad1.0

    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 these issues 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.

  - A denial of service vulnerability was found in GStreamer's AV1 codec parser in gst-plugins-bad. The     gst_av1_parser_parse_tile_list_obu() function passes a byte count to a bit-reader API that expects a bit     count, causing parser desynchronization. A remote attacker could trick a user into opening a specially     crafted AV1 media file, triggering an assertion abort and causing the application to crash.
    (CVE-2026-52718)

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

ID	Name	Product	Family	Severity
326313	AlmaLinux 9 : gstreamer1-plugins-bad-free (ALSA-2026:36834)	Nessus	Alma Linux Local Security Checks	high
326268	RockyLinux 9 : gstreamer1-plugins-bad-free (RLSA-2026:36834)	Nessus	Rocky Linux Local Security Checks	high
326266	RockyLinux 10 : gstreamer1-plugins-bad-free (RLSA-2026:36749)	Nessus	Rocky Linux Local Security Checks	high
326063	AlmaLinux 10 : gstreamer1-plugins-bad-free (ALSA-2026:36749)	Nessus	Alma Linux Local Security Checks	high
326016	Oracle Linux 9 : gstreamer1-plugins-bad-free (ELSA-2026-36834)	Nessus	Oracle Linux Local Security Checks	high
325797	RHEL 9 : gstreamer1-plugins-bad-free (RHSA-2026:36834)	Nessus	Red Hat Local Security Checks	high
325735	RHEL 10 : gstreamer1-plugins-bad-free (RHSA-2026:36749)	Nessus	Red Hat Local Security Checks	high
325589	Amazon Linux 2 : gstreamer1-plugins-bad-free, --advisory ALAS2-2026-3790 (ALAS-2026-3790)	Nessus	Amazon Linux Local Security Checks	high
324987	Photon OS 4.0: Gst PHSA-2026-4.0-1045	Nessus	PhotonOS Local Security Checks	high
323684	FreeBSD : gstreamer1 -- multiple vulnerabilities (4e82a0e6-6801-42c6-8fb6-91b6b275a9e1)	Nessus	FreeBSD Local Security Checks	high
322272	Debian dsa-6362 : gir1.2-gst-plugins-bad-1.0 - security update	Nessus	Debian Local Security Checks	high
321145	Linux Distros Unpatched Vulnerability : CVE-2026-52718	Nessus	Misc.	medium

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