CVE-2026-100764
Received Received - Intake

Privilege Escalation in Firefox WebGPU Component

Publication date: 2026-09-29

Last updated on: 2026-09-29

Assigner: Mozilla Corporation

Description
Privilege escalation due to incorrect boundary conditions 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-2026-100764
EUVD
EUVD-2026-88916

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-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 is a privilege escalation vulnerability caused by incorrect boundary conditions in the Graphics: WebGPU component of Firefox. It allows an attacker to gain higher privileges than intended.

Detection Guidance

This vulnerability is specific to Firefox's Graphics: WebGPU component and was fixed in Firefox 157. To detect if your system is vulnerable, check the installed Firefox version using 'firefox --version' or 'about:support' in Firefox. If the version is below 157, the system is likely vulnerable.

Impact Analysis

An attacker could exploit this to escalate their privileges on your system, potentially gaining unauthorized access to sensitive data or performing actions with elevated permissions.

Mitigation Strategies

Update Firefox to version 157 or later immediately. This can be done via your system's package manager (e.g., 'sudo apt update && sudo apt upgrade firefox' on Debian/Ubuntu) or by downloading the latest version directly from Mozilla's website.

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