Local privilege escalation via Hyper-V race condition
Published Sep 9, 2025 · Updated Feb 26, 2026
A race condition in Microsoft Windows Hyper-V allows local users with existing access to elevate privileges on affected Windows hosts. Microsoft identifies improper synchronization of a shared resource and a resulting use-after-free but has not disclosed the affected Hyper-V function or object. Exploitation requires low-privileged local access and no user interaction, and success permits execution with elevated host privileges.
Summary
What happened
A race condition in Microsoft Windows Hyper-V allows local users with existing access to elevate privileges on affected Windows hosts. Microsoft identifies improper synchronization of a shared resource and a resulting use-after-free but has not disclosed the affected Hyper-V function or object. Exploitation requires low-privileged local access and no user interaction, and success permits execution with elevated host privileges.
The record
- CVE
- CVE-2025-54092
- Published
- Sep 9, 2025
- Updated
- Feb 26, 2026
- Vendor
- Microsoft
- Product
- Windows Server 2019
- Classifications
- CWE-362, CWE-416, T1068
- Attack vector
- local
- Privileges
- authenticated
Timeline
How it unfolded
- Sep 9, 2025CVE publishedPublication date reported by the CVE source.
- Feb 26, 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=10.0.17763.0 <10.0.17763.7792
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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