CVE-2026-12293
CRITICAL severity · CVSS 9.8 · Use-after-free
9.8CVSS CRITICAL
Summary
Use-after-free in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 152 and Thunderbird 152.
Impact & exploitability
Attack vectorNetwork
Attack complexityLow
Privileges requiredNone
User interactionNone
Confidentiality impactHigh
Integrity impactHigh
Availability impactHigh
Exploit probability (EPSS)0%
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
Affected products we track (2)
Recommendation
Apply the vendor fix promptly. Open any affected product above for its exact safe version.
Additional information
- NVD record
- https://www.mozilla.org/security/advisories/mfsa2026-57/Advisory
- https://www.mozilla.org/security/advisories/mfsa2026-60/Advisory
- https://bugzilla.mozilla.org/show_bug.cgi?id=2039568
- https://access.redhat.com/security/cve/CVE-2026-12293
- https://bugzilla.redhat.com/show_bug.cgi?id=2489216
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-12293.json