---
id: CVE-2026-52721
title: >-
  Gstreamer1-plugins-bad-free: gstreamer: multiple out-of-bounds reads in
  pcapparse ipv4/tcp header parsing
summary: >-
  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 pipeli…
severity: medium
cvss: 5.3
cvssVector: 'CVSS:3.1/AV:L/AC:H/PR:N/UI:R/S:U/C:L/I:N/A:H'
cvssSource: cna
cwe:
  - CWE-125
vendor: Red Hat
product: gstreamer1-plugins-bad-free
affected:
  - gstreamer1-plugins-bad-free (all versions)
  - gstreamer-plugins-bad-free
  - gstreamer1-plugins-bad-free (all versions)
  - gstreamer-plugins-bad-free (all versions)
  - gstreamer1-plugins-bad-free (all versions)
  - gstreamer1-plugins-bad-free (all versions)
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-06-15T19:38:48.976157Z'
published: '2026-06-15'
updated: '2026-11-05'
sourceUpdated: '2026-11-05T21:20:10.494Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-52721'
references:
  - url: 'https://access.redhat.com/security/cve/CVE-2026-52721'
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2486732'
    label: RHBZ#2486732
  - url: 'https://gitlab.freedesktop.org/gstreamer/gstreamer/-/work_items/5106'
tags:
  - cve.org
epss: 0.00107
epssPercentile: 0.01173
ingestedAt: '2026-11-05T22:38:32.040Z'
---

## Overview

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.

## Affected

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

## Remediation

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

### Workarounds

Red Hat is not aware of a practical temporary workaround that fully mitigates this issue or meets Red Hat Product Security's standards for usability, deployment, applicability, or stability.