CVE-2025-9179

CRITICAL

Firefox < 115.27.0, < 142.0 and Thunderbird < 128.14.0, < 142.0 - Memory Corruption in GMP Process

Title source: llm
STIX 2.1

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.

References (10)

Core 10

Scores

CVSS v3 9.8
EPSS 0.0019
EPSS Percentile 41.0%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact total

Details

CWE
CWE-119
Status published
Products (11)
mozilla/firefox < 115.27.0
mozilla/firefox < 142.0
Mozilla/Firefox 115.27 - 115.*
Mozilla/Firefox 128.14 - 128.*
Mozilla/Firefox 140.2 - 140.*
Mozilla/Firefox 142
mozilla/thunderbird < 128.14.0
mozilla/thunderbird < 142.0
Mozilla/Thunderbird 128.14 - 128.*
Mozilla/Thunderbird 140.2 - 140.*
... and 1 more
Published Aug 19, 2025
Tracked Since Feb 18, 2026