CVE-2025-13026

Sandbox escape due to incorrect boundary conditions in the Graphics: WebGPU component

CVSS 9.8 CRITICALEPSS 0.3%CWE-703

Vexday Risk Score

28Low

SSVC decision (CISA)

Track

No exploitation signal → monitor

CVSS 9.8EPSS 0.3%KEV nãoPoC —Nuclei —Metasploit —Patch —

Lifecycle

11 Nov 2025Published on NVD

Recommendation: Monitor — no exploitation signal at the moment.

Sandbox escape due to incorrect boundary conditions in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 145 and Thunderbird 145.

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Affected products

Mozilla · Firefox Mozilla · Thunderbird

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References

https://bugzilla.mozilla.org/show_bug.cgi?id=1994441 https://www.mozilla.org/security/advisories/mfsa2025-87/https://www.mozilla.org/security/advisories/mfsa2025-90/