Sandbox Escape Vulnerability in Firefox Graphics Component
CVE-2026-124921

Currently unrated

Key Information:

Vendor: Mozilla
Status: Firefox
Vendor: CVE Published:; 10 November 2026

What is CVE-2026-124921?

A sandbox escape vulnerability in the Graphics: WebGPU component of Firefox allows unauthorized access to sensitive resources, potentially compromising the integrity of user systems. This issue was addressed in Firefox version 160, ensuring improved security for users.

Affected Version(s)

Firefox 160

References

https://bugzilla.mozilla.org/show_bug.cgi?id=2073651

https://www.mozilla.org/security/advisories/mfsa2026-125/

Download the Critical Vulnerability Management Cheat Sheet

Timeline

Vulnerability published
Nov 10, 2026
Vulnerability Reserved
Nov 9, 2026

Credit

Mozilla

CVE-2026-124921 Data

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