Local code execution via untrusted pointer dereference
Published Sep 8, 2026 · Updated Sep 9, 2026
Untrusted pointer dereference in Microsoft Windows Hyper-V allows local users to execute code across a security boundary. Microsoft identifies an untrusted pointer dereference but has not disclosed the affected function or how attacker-controlled data reaches that pointer operation. Exploitation requires authenticated local access, and successful exploitation executes code under a different security authority.
Summary
What happened
Untrusted pointer dereference in Microsoft Windows Hyper-V allows local users to execute code across a security boundary. Microsoft identifies an untrusted pointer dereference but has not disclosed the affected function or how attacker-controlled data reaches that pointer operation. Exploitation requires authenticated local access, and successful exploitation executes code under a different security authority.
The record
- CVE
- CVE-2026-80083
- Published
- Sep 8, 2026
- Updated
- Sep 9, 2026
- Vendor
- Microsoft
- Product
- Windows Server 2025 (Server Core installation)
- Classifications
- CWE-822, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Sep 8, 2026CVE publishedPublication date reported by the CVE source.
- Sep 9, 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?
Compare these published version ranges with your installed build and any vendor patches.
- Affected versionversion=10.0.26100.0 <10.0.26100.33438
What conditions does exploitation require?
What is affected?
Published CVSS scores
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
Public exploit references
No public exploit references are available in this record.
Labels summarize the accepted research assessment. They do not indicate a test against your environment.
Technologies
Your stack
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Your stack
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