CVE-2026-12293

Use-after-free in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 152 and Thunderbird 152.

CVSS v3 9.8 CRITICAL

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

References

Link	Resource
https://bugzilla.mozilla.org/show_bug.cgi?id=2039568	Permissions Required
https://www.mozilla.org/security/advisories/mfsa2026-57/	Vendor Advisory
https://www.mozilla.org/security/advisories/mfsa2026-60/	Vendor Advisory

Configurations

Configuration 1 (hide)

OR	cpe:2.3:a:mozilla:firefox:::::-:::*
	cpe:2.3:a:mozilla:thunderbird:::::-:::*

History

18 Jun 2026, 17:16

Type	Values Removed	Values Added
CWE		CWE-416
References	~~() https://bugzilla.mozilla.org/show_bug.cgi?id=2039568 -~~	() https://bugzilla.mozilla.org/show_bug.cgi?id=2039568 - Permissions Required
References	~~() https://www.mozilla.org/security/advisories/mfsa2026-57/ -~~	() https://www.mozilla.org/security/advisories/mfsa2026-57/ - Vendor Advisory
References	~~() https://www.mozilla.org/security/advisories/mfsa2026-60/ -~~	() https://www.mozilla.org/security/advisories/mfsa2026-60/ - Vendor Advisory
First Time		Mozilla Mozilla thunderbird Mozilla firefox
CVSS	v2 : ~~unknown~~ v3 : ~~unknown~~	v2 : unknown v3 : 9.8
CPE		cpe:2.3:a:mozilla:thunderbird:::::-:::* cpe:2.3:a:mozilla:firefox:::::-:::*

16 Jun 2026, 17:16

Type	Values Removed	Values Added
References		() https://www.mozilla.org/security/advisories/mfsa2026-60/ -
Summary	~~(en) Use-after-free in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 152.~~	(en) Use-after-free in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 152 and Thunderbird 152.

16 Jun 2026, 13:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-06-16 13:16

Updated : 2026-06-18 17:16

NVD link : CVE-2026-12293

Mitre link : CVE-2026-12293

CVE.ORG link : CVE-2026-12293

JSON object : View

Products Affected

mozilla

firefox
thunderbird

CWE

CWE-416

Use After Free

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