Paper/Archive/CVE-2026-100763

CVE-2026-100763

Mozilla Thunderbird — Incorrect boundary conditions in the Graphics: WebGPU component

EPSS 0.4%CVSS 9.1

critical.is priorityof 100

34

CVSS 9.1 (ADP)9.1 / 10 × 3027.3 Not in CISA KEV+300.0 EPSS percentile 31.4.314 × 206.3 No public exploit+100.0 SSVC exploitation: none+100.0

Description · from the CVE record

Incorrect boundary conditions in the Graphics: WebGPU component. This vulnerability was fixed in Thunderbird 157 and Firefox 157.

Affected

ProductAffectedFixed inSource

Thunderbirdsee advisory157CNA

Firefoxsee advisory157CNA

Scores by source

CISA ADP9.1CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H

CISA ADPSSVCExploitation: none · Automatable: yes · Technical impact: partial

References

refbugzilla.mozilla.org/show_bug.cgi?id=2059929 refmozilla.org/security/advisories/mfsa2026-101 refmozilla.org/security/advisories/mfsa2026-97