CVE-2025-9179

Severity CVSS v4.0:

Pending analysis

Type:

CWE-119 Buffer Errors

Publication date:

19/08/2025

Last modified:

13/04/2026

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.

Impact

Vector 3.x

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H CVSS v3.1 Severity and Metrics:

Base Score: 9.80 CRITICAL
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector (AV): Network
Attack Complexity (AC): Low
Privileges Required (PR): None
User Interaction (UI): None
Scope (S): Unchanged
Confidentiality (C): High
Integrity (I): High
Availability (A): High

Base Score 3.x

9.80

Severity 3.x

CRITICAL

Vulnerable products and versions

CPE	From	Up to
cpe:2.3:a:mozilla:firefox:::::esr:::*		115.27.0 (excluding)
cpe:2.3:a:mozilla:firefox:::::-:::*		142.0 (excluding)
cpe:2.3:a:mozilla:firefox:::::esr:::*	128.0 (including)	128.14.0 (excluding)
cpe:2.3:a:mozilla:firefox:::::esr:::*	140.0 (including)	140.2.0 (excluding)
cpe:2.3:a:mozilla:thunderbird:::::esr:::*		128.14.0 (excluding)
cpe:2.3:a:mozilla:thunderbird:::::-:::*		142.0 (excluding)
cpe:2.3:a:mozilla:thunderbird:::::esr:::*	140.0 (including)	140.2.0 (excluding)

To consult the complete list of CPE names with products and versions, see this page

CVE-2025-9179

Description

Impact

Vulnerable products and versions

References to Advisories, Solutions, and Tools