CVE-2026-12293

critical

Description

Use-after-free in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 152 and Thunderbird 152.

References

https://www.mozilla.org/security/advisories/mfsa2026-60/

https://www.mozilla.org/security/advisories/mfsa2026-57/

https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-12293.json

https://bugzilla.redhat.com/show_bug.cgi?id=2489216

https://bugzilla.mozilla.org/show_bug.cgi?id=2039568

https://access.redhat.com/security/cve/CVE-2026-12293

Details

Source: Mitre, NVD

Published: 2026-06-16

Updated: 2026-06-30

Risk Information

CVSS v2

Base Score: 10

Vector: CVSS2#AV:N/AC:L/Au:N/C:C/I:C/A:C

Severity: Critical

CVSS v3

Base Score: 9.8

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

Severity: Critical

EPSS

EPSS: 0.0015