NTLM hash disclosure via crafted library file
Published Mar 11, 2025 · Updated Feb 13, 2026
Information disclosure in Windows File Explorer allows remote attackers to capture NTLM challenge-response hashes through a crafted library file. File Explorer processes a URL value in a .library-ms definition and automatically accesses an attacker-controlled UNC path over SMB. User interaction is required, and the bounded consequence is disclosure of reusable authentication material rather than direct account access.
Summary
What happened
Information disclosure in Windows File Explorer allows remote attackers to capture NTLM challenge-response hashes through a crafted library file. File Explorer processes a URL value in a .library-ms definition and automatically accesses an attacker-controlled UNC path over SMB. User interaction is required, and the bounded consequence is disclosure of reusable authentication material rather than direct account access.
The record
- CVE
- CVE-2025-24071
- Published
- Mar 11, 2025
- Updated
- Feb 13, 2026
- Vendor
- Microsoft
- Product
- Windows 10 Version 1507
- Classifications
- CWE-200, T1187
- Attack vector
- network
- Privileges
- unauthenticated
Timeline
How it unfolded
- Mar 11, 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 <10.0.10240.20947
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
- ThemeHackers CVE-2025-24071 proof of conceptproof of concept · unverified
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Technologies
Your stack
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Your stack
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