CVE-2026-5733
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Boundary Check Error in Firefox WebGPU Causes Potential Exploit

Publication date: 2026-04-07

Last updated on: 2026-04-13

Assigner: Mozilla Corporation

Description
Incorrect boundary conditions in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 149.0.2 and Thunderbird 149.0.2.
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Meta Information
Published
2026-04-07
Last Modified
2026-04-13
Generated
2026-06-16
AI Q&A
2026-04-07
EPSS Evaluated
2026-06-14
NVD
CVE-2026-5733
EUVD
EUVD-2026-19612
Affected Vendors & Products
Showing 1 associated CPE
Vendor Product Version / Range
mozilla firefox to 149.0.2 (exc)
Helpful Resources
Exploitability
CWE
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KEV
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CWE ID Description
CWE-119 The product performs operations on a memory buffer, but it reads from or writes to a memory location outside the buffer's intended boundary. This may result in read or write operations on unexpected memory locations that could be linked to other variables, data structures, or internal program data.
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Executive Summary

This vulnerability is due to incorrect boundary conditions in the Graphics: WebGPU component of Firefox versions earlier than 149.0.2.

Impact Analysis

This vulnerability involves incorrect boundary conditions in the Graphics: WebGPU component of Firefox versions prior to 149.0.2.

Such a flaw could potentially lead to unexpected behavior or security issues when rendering graphics, possibly allowing an attacker to exploit the browser's graphics processing.

Compliance Impact

The provided information does not specify any direct impact of this vulnerability on compliance with common standards and regulations such as GDPR or HIPAA.

Mitigation Strategies

To mitigate this vulnerability, you should update Mozilla Firefox and Thunderbird to version 149.0.2 or later.

This update addresses the incorrect boundary conditions in the Graphics: WebGPU component and includes fixes for multiple other high-impact memory safety and integer overflow bugs.

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