Critical severity9.8NVD Advisory· Published Jun 16, 2026· Updated Jul 15, 2026
CVE-2026-12293
CVE-2026-12293
Description
Use-after-free in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 152 and Thunderbird 152.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
9- osv-coords5 versionspkg:apk/chainguard/firefox-esrpkg:apk/wolfi/firefoxpkg:apk/chainguard/firefoxpkg:rpm/opensuse/firefox-esr&distro=openSUSE%20Tumbleweedpkg:rpm/opensuse/MozillaFirefox&distro=openSUSE%20Tumbleweed
< 0+ 4 more
- (no CPE)range: < 0
- (no CPE)range: < 152-r0
- (no CPE)range: < 152-r0
- (no CPE)range: < 153.0-1.1
- (no CPE)range: < 152.0-1.1
>=152+ 1 more
- (no CPE)range: >=152
- cpe:2.3:a:mozilla:firefox:*:*:*:*:-:*:*:*range: <152.0.0
>=152+ 1 more
- (no CPE)range: >=152
- cpe:2.3:a:mozilla:thunderbird:*:*:*:*:-:*:*:*range: <152.0.0
Patches
Vulnerability mechanics
References
6- www.mozilla.org/security/advisories/mfsa2026-57/nvdVendor Advisory
- www.mozilla.org/security/advisories/mfsa2026-60/nvdVendor Advisory
- bugzilla.mozilla.org/show_bug.cginvdPermissions Required
- access.redhat.com/security/cve/CVE-2026-12293nvd
- bugzilla.redhat.com/show_bug.cginvd
- security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-12293.jsonnvd
News mentions
1- Multiple Vulnerabilities in Firefox 152 Enables Remote Code Execution AttacksCyber Security News · Jun 18, 2026