by Kastro
Paper/Archive/CVE-2026-2788

CVE-2026-2788

Mozilla Firefox — Incorrect boundary conditions in the Audio/Video: GMP component

EPSS 0.7%CVSS 9.8
critical.is priorityof 100
40
CVSS 9.8 (ADP, NVD agree)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 52.3.523 × 2010.5No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

Incorrect boundary conditions in the Audio/Video: GMP component. This vulnerability was fixed in Firefox 148, Firefox ESR 115.33, Firefox ESR 140.8, Thunderbird 148, and Thunderbird 140.8.

Affected

ProductAffectedFixed inSource
Firefoxsee advisory115.33CNA
Thunderbirdsee advisory140.8CNA

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

References

refbugzilla.mozilla.org/show_bug.cgi?id=2014824refmozilla.org/security/advisories/mfsa2026-13refmozilla.org/security/advisories/mfsa2026-14refmozilla.org/security/advisories/mfsa2026-15refmozilla.org/security/advisories/mfsa2026-16refmozilla.org/security/advisories/mfsa2026-17