CVE-2026-12293

Use-after-free in the Graphics: WebGPU component

Published Jun 16, 2026 CVSS 3.1 · 9.8 Critical EPSS < 1% KEV · Not listed
Description
Use-after-free in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 152 and Thunderbird 152.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Metrics cvssV3_1

{'score': 9.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'yes', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}

Type Values Removed Values Added
Weaknesses CWE-416
Type Values Removed Values Added
Description Use-after-free in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 152. Use-after-free in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 152 and Thunderbird 152.
References
Type Values Removed Values Added
First Time appeared Mozilla
Mozilla firefox
Vendors & Products Mozilla
Mozilla firefox
Type Values Removed Values Added
Description Use-after-free in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 152.
Title Use-after-free in the Graphics: WebGPU component
References
Weaknesses

Sources

Status
PUBLISHED
Assigner
mozilla
Published
Updated
Jul 15, 2026, 1:22 AM
Reserved
Jun 15, 2026, 3:08 PM
Status
Modified
Published
Jun 16, 2026, 1:16 PM
Modified
Oct 26, 2026, 1:10 PM
Severity
Important
Public date
Jun 16, 2026, 11:52 AM