by Kastro
Paper/Archive/CVE-2025-9179

CVE-2025-9179

Mozilla Firefox — Sandbox escape due to invalid pointer in the Audio/Video: GMP component

EPSS 0.6%CVSS 9.8
critical.is priorityof 100
39
CVSS 9.8 (ADP)9.8 / 10 × 3029.4Not in CISA KEV+300.0EPSS percentile 49.3.493 × 209.9No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

An attacker was able to perform memory corruption in the GMP process which processes encrypted media. This process is also heavily sandboxed, but represents slightly different privileges from the content process. This vulnerability was fixed in Firefox 142, Firefox ESR 115.27, Firefox ESR 128.14, Firefox ESR 140.2, Thunderbird 142, Thunderbird 128.14, and Thunderbird 140.2.

Affected

ProductAffectedFixed inSource
Firefoxsee advisory115.27CNA
Thunderbirdsee advisory128.14CNA

Scores by source

CISA ADP9.8CVSS: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=1979527refmozilla.org/security/advisories/mfsa2025-64refmozilla.org/security/advisories/mfsa2025-65refmozilla.org/security/advisories/mfsa2025-66refmozilla.org/security/advisories/mfsa2025-67refmozilla.org/security/advisories/mfsa2025-70refmozilla.org/security/advisories/mfsa2025-71refmozilla.org/security/advisories/mfsa2025-72reflists.debian.org/debian-lts-announce/2025/08/msg00018.htmlreflists.debian.org/debian-lts-announce/2025/08/msg00016.html