Privilege escalation due to use-after-free in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 155, Firefox ESR 153.2, Thunderbird 155, and Thunderbird 153.2.
History

Tue, 01 Sep 2026 22:00:00 +0000

Type Values Removed Values Added
Description Privilege escalation due to use-after-free in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 155 and Firefox ESR 153.2. Privilege escalation due to use-after-free in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 155, Firefox ESR 153.2, Thunderbird 155, and Thunderbird 153.2.
References

Tue, 01 Sep 2026 15:30:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 01 Sep 2026 14:15:00 +0000

Type Values Removed Values Added
Weaknesses CWE-416

Tue, 01 Sep 2026 13:45:00 +0000

Type Values Removed Values Added
First Time appeared Mozilla
Mozilla firefox
Vendors & Products Mozilla
Mozilla firefox

Tue, 01 Sep 2026 12:45:00 +0000

Type Values Removed Values Added
Description Privilege escalation due to use-after-free in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 155 and Firefox ESR 153.2.
Title Privilege escalation due to use-after-free in the Graphics: WebGPU component
References

cve-icon MITRE

Status: PUBLISHED

Assigner: mozilla

Published:

Updated: 2026-09-02T03:55:41.775Z

Reserved: 2026-09-01T07:25:15.751Z

Link: CVE-2026-84123

cve-icon Vulnrichment

Updated: 2026-09-01T14:16:44.658Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-09-01T13:20:06.160

Modified: 2026-09-02T04:18:04.510

Link: CVE-2026-84123

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-09-02T04:00:09Z