Privilege escalation via incorrect CanvasWebGL boundary checks
Published Sep 15, 2026 · Updated Sep 15, 2026
Incorrect boundary conditions in Mozilla Firefox and Firefox ESR allow attackers to escalate privileges through the CanvasWebGL component. Mozilla has not disclosed the specific CanvasWebGL routine or how it applies an incorrect limit to attacker-controlled graphics input. The required content and interaction are undisclosed, as are the privileges gained and the boundary between the compromised content process and the elevated context.
Summary
What happened
Incorrect boundary conditions in Mozilla Firefox and Firefox ESR allow attackers to escalate privileges through the CanvasWebGL component. Mozilla has not disclosed the specific CanvasWebGL routine or how it applies an incorrect limit to attacker-controlled graphics input. The required content and interaction are undisclosed, as are the privileges gained and the boundary between the compromised content process and the elevated context.
The record
- CVE
- CVE-2026-92007
- 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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