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Vulnerability record · CVE-2025-12380 · published 28 October 2025

CVE-2025-12380: Mozilla firefox use after free vulnerability

Mozilla · Firefox

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.

9.8 CVSS 3.1 Critical EPSS 0.32% · top 78.1% CWE-416 · Use after free
9.8CVSS 3.1 base score
0.32%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
2References
17 Jun 2026Last modified by NVD

Description

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

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://bugzilla.mozilla.org/show_bug.cgi?id=1993113 Permissions RequiredVendor Advisory
https://www.mozilla.org/security/advisories/mfsa2025-86/ Vendor Advisory

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

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Source: NIST National Vulnerability Database (record CVE-2025-12380), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.