Privilege escalation via incorrect CanvasWebGL boundary conditions
Published Sep 15, 2026 · Updated Sep 15, 2026
Incorrect boundary conditions in Mozilla Firefox and Firefox ESR allow attackers to gain elevated privileges through CanvasWebGL content. Mozilla identifies Graphics: CanvasWebGL as the affected component but has not published which boundary check mishandles untrusted input or the resulting memory operation. The available record does not specify required access, user interaction, or whether exploitation escapes the web-content sandbox, leaving the elevated privilege scope undisclosed.
Summary
What happened
Incorrect boundary conditions in Mozilla Firefox and Firefox ESR allow attackers to gain elevated privileges through CanvasWebGL content. Mozilla identifies Graphics: CanvasWebGL as the affected component but has not published which boundary check mishandles untrusted input or the resulting memory operation. The available record does not specify required access, user interaction, or whether exploitation escapes the web-content sandbox, leaving the elevated privilege scope undisclosed.
The record
- CVE
- CVE-2026-92009
- Published
- Sep 15, 2026
- Updated
- Sep 15, 2026
- Vendor
- Unknown vendor
- Product
- Unknown product
- Classifications
- Unavailable
- Attack vector
- Unavailable
- Privileges
- Unavailable
Timeline
How it unfolded
- Sep 15, 2026CVE publishedPublication date reported by the CVE source.
- Sep 15, 2026Record updatedLatest update available in the CVE record.
Exploitability
Present is not the same as exploitable
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Is a vulnerable build present?
What conditions does exploitation require?
What is affected?
Affected products and versions are unavailable in this record.
Published CVSS scores
No CVSS assessment is available in this record.
CVSS describes severity. EPSS estimates exploitation probability.
Attacks
What attackers are doing with it
Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.
Weakness, pattern, technique
No sourced classifications are available.
Public exploit references
No public exploit references are available in this record.
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Technologies
Your stack
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Your stack
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