CVE-2026-84131

HighCVSS 8.8/10Last modified Sep 3, 2026

Description

Privilege escalation due to invalid pointer in the Graphics component. This vulnerability was fixed in Firefox 155, Firefox ESR 115.40, Firefox ESR 140.15, Firefox ESR 153.2, Thunderbird 155, Thunderbird 140.15, and Thunderbird 153.2.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-763

Affected software

No affected versions have been published.

Timeline

Published
Sep 1, 2026
Last modified
Sep 3, 2026
NVD status
Analyzed

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CVE-2026-84131: High severity, CVSS 8.8 | Vulnix