CVE-2025-4082

firefox: thunderbird: WebGL shader attribute memory corruption in Firefox for macOS

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Severity

Important

Red Hat Product Security

7.6

CVSS 3.1

Review impact separately from score.

Published · April 29, 2025

Updated · June 28, 2026

Description

A flaw was found in Firefox. The Mozilla Foundation's Security Advisory describes the following issue: Modification of specific WebGL shader attributes could trigger an out-of-bounds read, which, when chained with other vulnerabilities, could be used to escalate privileges. This bug only affects Firefox for macOS. Other versions of Firefox are unaffected.

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 · 7.6
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:L/A:H

CWE-125 · Out-of-bounds Read