CVE-2026-92008
Received Received - Intake

Privilege Escalation in Firefox Graphics CanvasWebGL

Publication date: 2026-09-15

Last updated on: 2026-09-15

Assigner: Mozilla Corporation

Description
Privilege escalation due to incorrect boundary conditions in the Graphics: CanvasWebGL component. This vulnerability was fixed in Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, and Firefox ESR 153.3.

CVSS Scores

EPSS Scores

Probability:
Percentile:

Meta Information

Published
2026-09-15
Last Modified
2026-09-15
Generated
2026-09-15
AI Q&A
2026-09-15
EPSS Evaluated
N/A
NVD
CVE-2026-92008
EUVD
EUVD-2026-78471

Affected Vendors & Products

Showing 4 associated CPEs
Vendor Product Version / Range
mozilla firefox 156
mozilla firefox_esr 115.41
mozilla firefox_esr 140.16
mozilla firefox_esr 153.3

Helpful Resources

Exploitability

CWE
CWE Icon
KEV
KEV Icon
CWE ID Description
CWE-120 The product copies an input buffer to an output buffer without verifying that the size of the input buffer is less than the size of the output buffer.

Attack-Flow Graph

AI Quick Actions

Instant insights powered by AI
Executive Summary

This is a privilege escalation vulnerability caused by incorrect boundary conditions in the Graphics: CanvasWebGL component of Firefox. It allows an attacker to gain higher privileges than intended, potentially leading to unauthorized system access or control.

Detection Guidance

Detecting this vulnerability requires checking the installed version of Firefox or Firefox ESR. Compare the version against the fixed releases: Firefox 156, Firefox ESR 115.41, Firefox ESR 140.16, or Firefox ESR 153.3. Use commands like 'firefox --version' or 'firefox-esr --version' to check versions.

Impact Analysis

If exploited, this vulnerability could allow an attacker to escalate their privileges on your system, potentially gaining access to sensitive data, installing malware, or taking control of your device. Users of affected Firefox versions are at risk until they update.

Compliance Impact

This vulnerability allows privilege escalation through the Graphics: CanvasWebGL component, which could lead to unauthorized access or control. Such issues may violate compliance requirements under GDPR (data protection) or HIPAA (health data security) by enabling unauthorized data access or modification.

Mitigation Strategies

Immediately update Firefox to version 156 or Firefox ESR to versions 115.41, 140.16, or 153.3. If automatic updates are disabled, manually download and install the latest version from Mozilla's official website.

Chat Assistant

Ask questions about this CVE
Hi! I’m here to help you understand CVE-2026-92008. Ask me anything about the vulnerability, its impact, or mitigation strategies.
0/70

EPSS Chart