CVE-2025-13021

CRITICAL 9.8CVE-2025-13021 · Published 11/11/2025 · updated 18/10/2026

In short

CVE-2025-13021 is a CRITICAL (CVSS 9.8) vulnerability affecting firefox (mozilla).
Chance of exploitation in the next 30 days (EPSS): 0.38%, higher than 32.5% of all vulnerabilities.
Fix: update to 145.0 or later.

Package	Affected versions	Patched versions
firefox mozilla	`< 145.0`	`145.0`

Incorrect boundary conditions in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 145 and Thunderbird 145.

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Package

Affected versions

Patched versions

< 145.0

145.0

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