CVE-2026-12293
criticalUse-after-free in the Graphics: WebGPU component.
Vendor / product: Mozilla — firefox
Use-after-free in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 152 and Thunderbird 152.
CVSS
9.8
9.8 (CVSS v3.1)
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H Severity source: NVD CVSS v3.1 (nvd@nist.gov)
Timeline (UTC)
Published: 2026-06-16 13:16
Modified: 2026-10-26 13:10
NVD status: Modified
Last synced 2 days ago
Verified against the source API 2026-10-27 07:07 UTC
Exploitation
Not listed in CISA KEV (as of last catalog sync)
Absence from KEV does not mean a CVE is not exploited. Exploitation status: unknown (no authoritative evidence in our sources).
Affected products
mozilla / firefox <152.0.0
mozilla / thunderbird <152.0.0
Weakness classification (CWE)
Source: NVD / CISA. “NVD-CWE-Other” and “NVD-CWE-noinfo” mean NVD could not assign a specific weakness.
Mitigation & advisories
Vendor advisory: https://www.mozilla.org/security/advisories/mfsa2026-57/
Vendor advisory: https://www.mozilla.org/security/advisories/mfsa2026-60/
References
- https://bugzilla.mozilla.org/show_bug.cgi?id=2039568 security@mozilla.org
- https://www.mozilla.org/security/advisories/mfsa2026-57/ security@mozilla.org
- https://www.mozilla.org/security/advisories/mfsa2026-60/ security@mozilla.org
- https://access.redhat.com/security/cve/CVE-2026-12293 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- https://bugzilla.redhat.com/show_bug.cgi?id=2489216 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
- https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-12293.json 0b0ca135-0b70-47e7-9f44-1890c2a1c46c
Data sources
NVD CVE API 2.0 — fetched 2026-10-27 07:07 UTC · record ↗