Privilege escalation via uninitialized CanvasWebGL memory
Published Sep 15, 2026 · Updated Sep 15, 2026
Uninitialized memory in Mozilla Firefox before 156 and Firefox ESR before 153.3 allows attackers to escalate privileges via unspecified vectors. The public source identifies CanvasWebGL and uninitialized memory but does not disclose the routine or operation that leaves the memory uninitialized. The published record does not state the required user interaction or bound the resulting privilege level beyond privilege escalation.
Summary
What happened
Uninitialized memory in Mozilla Firefox before 156 and Firefox ESR before 153.3 allows attackers to escalate privileges via unspecified vectors. The public source identifies CanvasWebGL and uninitialized memory but does not disclose the routine or operation that leaves the memory uninitialized. The published record does not state the required user interaction or bound the resulting privilege level beyond privilege escalation.
The record
- CVE
- CVE-2026-92052
- 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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