CVE-2025-9179

thunderbird: firefox: Sandbox escape due to invalid pointer in the Audio/Video: GMP component

Loading…

Severity

Important

Red Hat Product Security

7.5

CVSS 3.1

Review impact separately from score.

Published · August 20, 2025

Updated · June 30, 2026

Description

A flaw was found in Thunderbird and Firefox. The Mozilla Foundation's Security Advisory describes the following issue: An attacker is able to perform memory corruption in the GMP process which process encrypted media. This process is also heavily sandboxed, but represents slightly different privileges from the content process.

Statement

Red Hat Product Security rates the severity of this flaw as determined by the Mozilla Foundation Security Advisory.

CVSS score applicability

The CVSS score(s) listed for this vulnerability do not reflect the associated product's status, and are included for informational purposes to better understand the severity of this vulnerability.

Mitigation

No mitigation is specified in collected source.

CVSS / CWE

CVSS 3.1 · 7.5
CVSS:3.1/AV:N/AC:H/PR:N/UI:R/S:U/C:H/I:H/A:H

CWE-119 · Improper Restriction of Operations within the Bounds of a Memory Buffer