---
id: CVE-2026-52722
title: A signed integer overflow vulnerability was found in GStreamer's VMnc decoder
summary: >-
  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
  …
severity: high
cvss: 7.1
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:H'
cwe:
  - CWE-190
  - CWE-190
published: '2026-06-15'
updated: '2026-07-28'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2026-52722'
references:
  - url: 'https://access.redhat.com/errata/RHSA-2026:36749'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:36834'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:37130'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:47069'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:47070'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:47071'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:47075'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:47076'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:47176'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/security/cve/CVE-2026-52722'
    label: secalert@redhat.com
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2486733'
    label: secalert@redhat.com
  - url: 'https://gitlab.freedesktop.org/gstreamer/gstreamer/-/work_items/5107'
    label: secalert@redhat.com
  - url: 'https://access.redhat.com/errata/RHSA-2026:36749'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://access.redhat.com/errata/RHSA-2026:36834'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://access.redhat.com/errata/RHSA-2026:37130'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://access.redhat.com/security/cve/CVE-2026-52722'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: 'https://bugzilla.redhat.com/show_bug.cgi?id=2486733'
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
  - url: >-
      https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-52722.json
    label: 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
tags:
  - nvd
epss: 0.00736
epssPercentile: 0.5261
ingestedAt: '2026-07-28T21:39:18.114Z'
---

## Overview

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.

## Remediation

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