---
id: CVE-2022-26486
title: >-
  An unexpected message in the WebGPU IPC framework could lead to a
  use-after-free and exploitable sandbox escape
summary: >-
  An unexpected message in the WebGPU IPC framework could lead to a
  use-after-free and exploitable sandbox escape. We have had reports of attacks
  in the wild abusing this flaw. This vulnerability affects Firefox < 97.0.2,
  Firefox ESR < 91.…
severity: critical
cvss: 9.6
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H'
cwe:
  - CWE-416
  - CWE-416
vendor: mozilla
product: firefox
affected:
  - firefox < 91.6.1
  - firefox < 97.0.2
  - firefox_focus < 97.3.0
  - firefox_mobile < 97.3.0
  - thunderbird < 91.6.2
patched:
  - firefox 97.0.2
  - firefox_focus 97.3.0
  - firefox_mobile 97.3.0
  - thunderbird 91.6.2
published: '2022-12-22'
updated: '2026-08-19'
source: NVD
sourceUrl: 'https://nvd.nist.gov/vuln/detail/CVE-2022-26486'
references:
  - url: 'https://bugzilla.mozilla.org/show_bug.cgi?id=1758070'
    label: security@mozilla.org
  - url: 'https://www.mozilla.org/security/advisories/mfsa2022-09/'
    label: security@mozilla.org
  - url: 'https://bugzilla.mozilla.org/show_bug.cgi?id=1758070'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: 'https://www.mozilla.org/security/advisories/mfsa2022-09/'
    label: af854a3a-2127-422b-91ae-364da2661108
  - url: >-
      https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2022-26486
    label: 134c704f-9b21-4f2e-91b3-4a467353bcc0
tags:
  - nvd
  - kev
  - in-the-wild
epss: 0.02349
epssPercentile: 0.82932
kev: true
kevDateAdded: '2022-03-07'
kevDueDate: '2022-03-21'
kevRansomware: false
exploited: true
zeroDay: true
ingestedAt: '2026-08-19T15:41:15.262Z'
---

## Overview

An unexpected message in the WebGPU IPC framework could lead to a use-after-free and exploitable sandbox escape. We have had reports of attacks in the wild abusing this flaw. This vulnerability affects Firefox < 97.0.2, Firefox ESR < 91.6.1, Firefox for Android < 97.3.0, Thunderbird < 91.6.2, and Focus < 97.3.0.

## Affected

- `firefox < 91.6.1`
- `firefox < 97.0.2`
- `firefox_focus < 97.3.0`
- `firefox_mobile < 97.3.0`
- `thunderbird < 91.6.2`

## Remediation

Upgrade past the affected range:

- `firefox 97.0.2`
- `firefox_focus 97.3.0`
- `firefox_mobile 97.3.0`
- `thunderbird 91.6.2`