Local information disclosure via NTFS TOCTOU race
Published Aug 12, 2025 · Updated Feb 13, 2026
Information disclosure in Microsoft Windows NTFS allows local users to read protected data by winning a filesystem race. The NTFS implementation checks a filesystem object's state and later uses it without ensuring that the checked object or state remains unchanged; Microsoft has not disclosed the responsible function or object type. Exploitation requires local access, user interaction, and a high-complexity race, while the disclosed consequence is bounded to information exposure.
Summary
What happened
Information disclosure in Microsoft Windows NTFS allows local users to read protected data by winning a filesystem race. The NTFS implementation checks a filesystem object's state and later uses it without ensuring that the checked object or state remains unchanged; Microsoft has not disclosed the responsible function or object type. Exploitation requires local access, user interaction, and a high-complexity race, while the disclosed consequence is bounded to information exposure.
The record
- CVE
- CVE-2025-50158
- Published
- Aug 12, 2025
- Updated
- Feb 13, 2026
- Vendor
- Microsoft
- Product
- Windows 10 Version 1507
- Classifications
- CWE-367, T1005
- Attack vector
- local
- Privileges
- unauthenticated
Timeline
How it unfolded
- Aug 12, 2025CVE publishedPublication date reported by the CVE source.
- Feb 13, 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=10.0.10240.0 <10.0.10240.21100
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.
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Technologies
Your stack
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Your stack
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