Findings

CVE-2022-26486

Mozilla Firefox Use-After-Free Vulnerability

Published Mar 7, 2022 · updated Aug 19, 2026 · mozilla firefox

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.

Timeline

Detection, updates, and resolution for this record.

  1. Mar 7, 2022 · Catalog

    Detected

    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.

  2. Mar 7, 2022 · CISA KEV

    Known exploited

    Apply updates per vendor instructions.

  3. Mar 21, 2022 · CISA KEV

    Remediation due

    Apply updates per vendor instructions.

  4. Aug 19, 2026 · Catalog

    Updated

    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.

Required action

Apply updates per vendor instructions.

CISA due date Mar 21, 2022

Affected

  • cpe mozilla/firefoxversion unspecified
  • cpe mozilla/firefox focusversion unspecified
  • cpe mozilla/firefox mobileversion unspecified
  • cpe mozilla/thunderbirdversion unspecified
  • vendor Mozilla Firefoxversion unspecified

Sources

  • CISA KEVCVE-2022-26486

    Mozilla Firefox contains a use-after-free vulnerability in WebGPU IPC Framework which can be exploited to perform arbitrary code execution.

    cisa.gov
  • CVE.orgCVE-2022-26486

    Official CVE identifier

    cve.org
  • FIRST EPSSCVE-2022-26486

    30-day exploitation probability 2.4%

    first.org
  • NIST NVDCVE-2022-26486

    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, Thunderb

    nvd.nist.gov

References