CVE-2026-100761
Received Received - Intake

Privilege Escalation in Firefox via WebGPU Use-After-Free

Publication date: 2026-09-29

Last updated on: 2026-09-29

Assigner: Mozilla Corporation

Description
Privilege escalation due to use-after-free in the Graphics: WebGPU component. This vulnerability was fixed in Firefox 157.

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Meta Information

Published
2026-09-29
Last Modified
2026-09-29
Generated
2026-09-29
AI Q&A
2026-09-29
EPSS Evaluated
N/A
NVD
CVE-2026-100761
EUVD
EUVD-2026-88913

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
mozilla firefox 157

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-416 The product reuses or references memory after it has been freed. At some point afterward, the memory may be allocated again and saved in another pointer, while the original pointer references a location somewhere within the new allocation. Any operations using the original pointer are no longer valid because the memory "belongs" to the code that operates on the new pointer.

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Executive Summary

This is a privilege escalation vulnerability caused by a use-after-free bug in the Graphics: WebGPU component of Firefox. A use-after-free occurs when a program continues to use memory after it has been freed, potentially allowing attackers to execute arbitrary code or escalate privileges.

Impact Analysis

An attacker could exploit this to run malicious code on your system, gain unauthorized access, or perform actions with elevated privileges. This could lead to data theft, system compromise, or further attacks within your network.

Mitigation Strategies

Update Firefox to version 157 or later to address the use-after-free vulnerability in the Graphics: WebGPU component.

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