CVE WatchAug 19, 2026

CVE-2022-26486

Mozilla Firefox Use-After-Free Vulnerability

CVSS

9.6

Critical

EPSS

2.3%

p82

KEV

YES

Mar 7, 2022

Exploit Today

0-100

Published: Dec 22, 2022 · Last modified: Aug 19, 2026 · CWE-416

EPSS · 30d

2.3%EPSS · 30 days2.3%

2026-08-022026-08-31

KEV catalog record

Product

Mozilla / Firefox

Vulnerability

Mozilla Firefox Use-After-Free Vulnerability

Added to KEV

Mar 7, 2022

Remediate by

Mar 21, 2022

Known ransomware use

Summary description

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

Required action

Apply updates per vendor instructions.

Notes

https://nvd.nist.gov/vuln/detail/CVE-2022-26486

Technical 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.

Official references

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