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CVE-2025-9179

CRITICAL

9.8

Description

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.

CVE Details

CVSS v3.1 Score9.8

SeverityCRITICAL

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

Attack VectorNETWORK

ComplexityLOW

Privileges RequiredNONE

User InteractionNONE

Published8/19/2025

Last Modified4/13/2026

Sourcenvd

Honeypot Sightings0

Affected Products

mozilla:firefoxmozilla:thunderbird

Weaknesses (CWE)

CWE-119

References

https://bugzilla.mozilla.org/show_bug.cgi?id=1979527(security@mozilla.org)

https://www.mozilla.org/security/advisories/mfsa2025-64/(security@mozilla.org)

https://www.mozilla.org/security/advisories/mfsa2025-65/(security@mozilla.org)

https://www.mozilla.org/security/advisories/mfsa2025-66/(security@mozilla.org)

https://www.mozilla.org/security/advisories/mfsa2025-67/(security@mozilla.org)

https://www.mozilla.org/security/advisories/mfsa2025-70/(security@mozilla.org)

https://www.mozilla.org/security/advisories/mfsa2025-71/(security@mozilla.org)

https://www.mozilla.org/security/advisories/mfsa2025-72/(security@mozilla.org)

https://lists.debian.org/debian-lts-announce/2025/08/msg00016.html(af854a3a-2127-422b-91ae-364da2661108)

https://lists.debian.org/debian-lts-announce/2025/08/msg00018.html(af854a3a-2127-422b-91ae-364da2661108)

IOC Correlations

No correlations recorded

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