Privilege Escalation in Firefox Graphics CanvasWebGL

Executive Summary

CVE-2026-92009 is a high-severity privilege escalation vulnerability in Firefox and Firefox ESR browsers. It occurs due to incorrect boundary conditions in the Graphics: CanvasWebGL component, allowing an attacker to gain elevated privileges on the affected system.

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Impact Analysis

This vulnerability could allow an attacker to escalate their privileges, potentially leading to unauthorized access or control over your system. It may enable them to execute arbitrary code, install malware, or steal sensitive data.

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Compliance Impact

The vulnerability allows privilege escalation, which could lead to unauthorized access or control over systems. This may violate compliance requirements under GDPR (data protection) and HIPAA (health data security) by enabling unauthorized data access or modification.

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Mitigation Strategies

Update Firefox to version 156 or later, Firefox ESR to version 115.41 or later, Firefox ESR to version 140.16 or later, or Firefox ESR to version 153.3 or later to address the privilege escalation vulnerability in the Graphics: CanvasWebGL component.

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