CVE-2026-5733

Incorrect boundary conditions in the Graphics: WebGPU component

State: Published
Severity: 8.8 High
Published: Apr 7, 2026
Updated: Jul 15, 2026
Reserved: Apr 7, 2026

Description

Incorrect boundary conditions in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 149.0.2 and Thunderbird 149.0.2.

Scores

CVSS	Score	Vector	Source
3.1	8.8 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H	CISA-ADP
3.1	8.8 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H	redhat-SADP

Weaknesses

CWE-119 Improper Restriction of Operations within the Bounds of a Memory Buffer
CWE-787 Out-of-bounds Write

Affected Products

Product	Versions
FirefoxMozilla	149.0.2 and laterNot affected
ThunderbirdMozilla	149.0.2 and laterNot affected

References

https://bugzilla.mozilla.org/show_bug.cgi?id=2022554
https://www.mozilla.org/security/advisories/mfsa2026-25/
https://www.mozilla.org/security/advisories/mfsa2026-28/
https://access.redhat.com/security/cve/CVE-2026-5733vdb-entry
RHBZ#2455902issue-tracking
https://security.access.redhat.com/data/csaf/v2/vex/2026/cve-2026-5733.json

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