CVEvulnerability

CVE-2022-26486

9.6 CRITICAL Known exploited Published 2022-12-22 Modified 2026-08-19 Official page ↗

CISA Known Exploited Vulnerability

Mozilla Firefox Use-After-Free Vulnerability — Mozilla Firefox

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

Added to KEV: 2022-03-07
Remediation due: 2022-03-21
Ransomware use: Unknown
Required action: Apply updates per vendor instructions.
Notes: https://nvd.nist.gov/vuln/detail/CVE-2022-26486

Status: Analyzed
Published: 2022-12-22
Last modified: 2026-08-19
Assigner: [email protected]
CVSS 3.1 ([email protected]): 9.6 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
CVSS 3.1 (134c704f-9b21-4f2e-91b3-4a467353bcc0): 9.6 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:H/I:H/A:H
Weaknesses: CWE-416

Description

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 configurations

• mozilla firefox (< 91.6.1) • mozilla firefox (< 97.0.2) • mozilla firefox focus (< 97.3.0) • mozilla firefox mobile (< 97.3.0) • mozilla thunderbird (< 91.6.2)

Weakness · CWE (1)

CWE-416 Use After Free weakness

References