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Linux Distros Unpatched Vulnerability : CVE-2026-12892

medium Nessus Plugin ID 323656

Synopsis

The Linux/Unix host has one or more packages installed with a vulnerability that the vendor indicates will not be patched.

Description

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

 - A flaw was found in GStreamer's gst-plugins-bad package. When processing a specially crafted H.264 video file containing malformed MVC or SVC extension slice NAL units, a 1-byte heap out-of-bounds read can occur during parsing. This happens when the parser attempts to check slice boundary information without first verifying that the NAL unit contains enough data beyond the extension header. An attacker could exploit this by tricking a user into opening a malicious H.264 video file, potentially causing the application to crash or leak a single byte of heap memory. (CVE-2026-12892)

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

Solution

There is no known solution at this time.

See Also

https://access.redhat.com/security/cve/cve-2026-12892

https://security-tracker.debian.org/tracker/CVE-2026-12892

Plugin Details

Severity: Medium

ID: 323656

File Name: unpatched_CVE_2026_12892.nasl

Version: 1.2

Type: Local

Agent: unix

Family: Misc.

Published: 6/29/2026

Updated: 6/29/2026

Supported Sensors: Frictionless Assessment AWS, Frictionless Assessment Azure, Frictionless Assessment Agent, Nessus Agent, Agentless Assessment, Tenable Cloud Security, Tenable Self-Hosted Container Security, Nessus

Risk Information

VPR

Risk Factor: Medium

Score: 4.0

CVSS v3

Risk Factor: Medium

Base Score: 4.4

Temporal Score: 4.1

Vector: CVSS:3.0/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L

Temporal Vector: CVSS:3.0/E:U/RL:U/RC:C

CVSS Score Source: CVE-2026-12892

Vulnerability Information

CPE: cpe:/o:debian:debian_linux:11.0, cpe:/o:centos:centos:7, cpe:/o:redhat:enterprise_linux:6, cpe:/o:redhat:enterprise_linux:7, cpe:/o:redhat:enterprise_linux:8, p-cpe:/a:centos:centos:gstreamer-plugins-bad-free, p-cpe:/a:centos:centos:gstreamer-plugins-bad-free-devel, p-cpe:/a:centos:centos:gstreamer-plugins-bad-free-devel-docs, p-cpe:/a:centos:centos:gstreamer-plugins-bad-free-extras, p-cpe:/a:centos:centos:gstreamer1-plugins-bad-free, p-cpe:/a:centos:centos:gstreamer1-plugins-bad-free-devel, p-cpe:/a:centos:centos:gstreamer1-plugins-bad-free-gtk, p-cpe:/a:debian:debian_linux:gst-plugins-bad1.0, p-cpe:/a:redhat:enterprise_linux:gstreamer-plugins-bad-free, p-cpe:/a:redhat:enterprise_linux:gstreamer-plugins-bad-free-devel, p-cpe:/a:redhat:enterprise_linux:gstreamer-plugins-bad-free-devel-docs, p-cpe:/a:redhat:enterprise_linux:gstreamer1-plugins-bad-free, p-cpe:/a:redhat:enterprise_linux:gstreamer1-plugins-bad-free-devel, p-cpe:/a:redhat:enterprise_linux:gstreamer1-plugins-bad-free-gtk, p-cpe:/a:redhat:enterprise_linux:gstreamer-plugins-bad-free-extras, cpe:/o:centos:centos:8, cpe:/o:redhat:enterprise_linux:9, cpe:/o:debian:debian_linux:12.0, cpe:/o:debian:debian_linux:13.0, cpe:/o:redhat:enterprise_linux:10, p-cpe:/a:redhat:enterprise_linux:gstreamer1-plugins-bad-free-libs, cpe:/o:debian:debian_linux:14.0, p-cpe:/a:centos:centos:gstreamer1-plugins-bad-free-libs

Required KB Items: Host/local_checks_enabled, Host/cpu, global_settings/vendor_unpatched, Host/OS/identifier

Exploit Ease: No known exploits are available

Vulnerability Publication Date: 6/23/2026

Reference Information

CVE: CVE-2026-12892