---
id: CVE-2026-119727
title: >-
  Gst-plugins-bad: gst-plugins-bad: h.265 sps scc palette predictor array
  overflow via integer underflow in bounds computation
summary: >-
  A flaw was found in GStreamer's gst-plugins-bad H.265 video parser. When
  parsing a specially crafted H.265 bitstream containing a Screen Content Coding
  (SCC) extension with certain palette predictor initializer settings, an
  integer under…
severity: medium
cvss: 6.5
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:N/I:N/A:H'
cvssSource: cna
cwe:
  - CWE-122
vendor: Red Hat
product: gstreamer1-plugins-bad-free
affected:
  - gstreamer1-plugins-bad-free (all versions)
  - gstreamer1-plugins-bad-free
  - gstreamer1-plugins-bad-free
  - gstreamer1-plugins-bad-free (all versions)
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-11-02T20:17:33.616559Z'
published: '2026-10-30'
updated: '2026-11-05'
sourceUpdated: '2026-11-05T17:05:14.261Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-119727'
references:
  - url: 'https://access.redhat.com/security/cve/CVE-2026-119727'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2564118'
    label: RHBZ#2564118
  - url: >-
      https://gitlab.freedesktop.org/gstreamer/gstreamer/-/merge_requests/10902.patch
  - url: 'https://gstreamer.freedesktop.org/security/sa-2026-0012.html'
tags:
  - cve.org
epss: 0.00252
epssPercentile: 0.16784
ingestedAt: '2026-11-05T22:38:31.422Z'
---

## Overview

A flaw was found in GStreamer's gst-plugins-bad H.265 video parser. When parsing a specially crafted H.265 bitstream containing a Screen Content Coding (SCC) extension with certain palette predictor initializer settings, an integer underflow in the upper-bound computation allows the parser to accept an out-of-range value for the number of palette predictor entries. This causes the parser to write beyond the end of a fixed-size array, resulting in memory corruption and an application crash. An attacker can deliver the malformed bitstream as a local file or over a network stream such as HTTP, HLS, DASH, RTSP, RTP, or WebRTC. Successful exploitation requires the application to open or play that content, and is limited to a denial-of-service impact.

## Affected

- `gstreamer1-plugins-bad-free (all versions)`
- `gstreamer1-plugins-bad-free`
- `gstreamer1-plugins-bad-free`
- `gstreamer1-plugins-bad-free (all versions)`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

### Workarounds

No mitigation is currently available that meets Red Hat Product Security's standards for usability, deployment, applicability, or stability.