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.
Affected products
mozilla: firefox
References2
- bugzilla.mozilla.org/show_bug.cgi?id=1993113 Permissions RequiredVendor Advisory
- www.mozilla.org/security/advisories/mfsa2025-86/ Vendor Advisory
Metrics
- CVSS 3.1
-
9.8
CRITICAL
Score source: CNA
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H - EPSS — exploit probability
- 0% percentile: 27 · as of 10 November 2026
- CWE
- CWE-416
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