Critical 9.8Published Oct 28, 2025

CVE-2025-12380Use-after-free in WebGPU internals triggered from a compromised child process

Updated under an hour ago (Oct 27, 2026, 4:23 AM ET)

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It affects Mozilla Firefox. Add what you run to find out whether that includes you.

No exploitation reported and no EPSS estimate yet.

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Exploited in the last 30 days

Starting with Firefox 142, it was possible for a compromised child process to trigger a use-after-free in the GPU or browser process using WebGPU-related IPC calls. This may have been usable to escape the child process sandbox. This vulnerability was fixed in Firefox 144.0.2.

CVSS: 9.8 CRITICAL (v3.1, CISA ADP)CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Weakness (CWE): CWE-416
Known exploited: Not in CISA's KEV catalog
EPSS (exploitation in the next 30 days): Not loaded for this CVE
Assigned by: mozilla
NVD analysis: Modified
Record last updated: Aug 5, 2026
First seen by InfoSec Signals: Oct 9, 2026

Affected products

Affected products

Mozilla Firefox mozilla:firefox (from the name)	from 144.0.2 not affected	CNA record
mozilla firefox mozilla:firefox	from 142.0 before 144.0.2	NVD

References

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1993113	permissions-required, vendor-advisory
https://www.mozilla.org/security/advisories/mfsa2025-86/	vendor-advisory

The CVE record on cve.org NVD's entry

The CVE record is authoritative. Products marked “from the name” were identified from the CNA's free-text names, not a CPE, and are matched less certainly. This product uses the NVD API but is not endorsed or certified by the NVD.