by Kastro
Paper/Archive/CVE-2026-12293

CVE-2026-12293

Mozilla Firefox — Use-after-free in the Graphics: WebGPU component

EPSS 0.3%CVSS 9.8
critical.is priorityof 100
34
CVSS 9.8 (ADP, NVD agree)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 22.9.229 × 204.6No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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

Affected

ProductAffectedFixed inSource
Firefoxsee advisory152CNA
Thunderbirdsee advisory152CNA
Red Hat Enterprise Linux 10see advisory–redhat-SADP
Red Hat Enterprise Linux 10see advisory–redhat-SADP
Red Hat Enterprise Linux 10see advisory–redhat-SADP
Red Hat Enterprise Linux 10see advisory–redhat-SADP
Red Hat Enterprise Linux 6see advisory–redhat-SADP
Red Hat Enterprise Linux 6see advisory–redhat-SADP
Red Hat Enterprise Linux 7see advisory–redhat-SADP
Red Hat Enterprise Linux 7see advisory–redhat-SADP
Red Hat Enterprise Linux 8see advisory–redhat-SADP
Red Hat Enterprise Linux 8see advisory–redhat-SADP

Scores by source

CISA ADP9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
NVD9.8CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
redhat-SADP (CNA)7.5CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: total

References

refbugzilla.mozilla.org/show_bug.cgi?id=2039568refmozilla.org/security/advisories/mfsa2026-57refmozilla.org/security/advisories/mfsa2026-60refaccess.redhat.com/security/cve/CVE-2026-12293refbugzilla.redhat.com/show_bug.cgi?id=2489216refsecurity.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-12293.json