CVE-2026-12892

Name: CVE-2026-12892
Creator: NVD / NIST
Published: 2026-06-23T21:16:55.07+00:00
License: https://creativecommons.org/publicdomain/zero/1.0/

MEDIUMCVSS 4.4/10EPSS 0.12%

Last modified Jun 25, 2026

This CVE is reserved or awaiting analysis. Details will appear once published by NVD.

Description

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.

Metrics

CVSS 3.1

4.4/10

CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:L

EPSS Probability

0.12%

2.5th percentile

Probability of exploitation in the next 30 days. Learn more

Weakness Enumeration

CWE-125

References

Timeline

Published: Jun 23, 2026
Last Modified: Jun 25, 2026
Status: Awaiting Analysis

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Source: NVD / NIST