Summary
Impact: Spoofing. Microsoft rating: Important. Not known to be exploited — Exploitation Less Likely. Customer action: Required.
Details
According to the CVSS metric, user interaction is required (UI:R). What interaction would the user have to do?
A user interacting with the file in multiple ways will cause the NTLM hash to be leaked. A few interactions which trigger this leak include:
Opening the parent folder in Explorer, Clicking the file (any mouse button), Dragging the file, Deleting the file
Security updates
10.0.17763.7919 — https://support.microsoft.com/help/5066586
10.0.20348.4294 — https://support.microsoft.com/help/5066782
10.0.19044.6456 — https://support.microsoft.com/help/5066791
10.0.22621.6060 — https://support.microsoft.com/help/5066793
10.0.26100.6899 — https://support.microsoft.com/help/5066835
10.0.25398.1913 — https://support.microsoft.com/help/5066780
10.0.10240.21161 — https://support.microsoft.com/help/5066837
10.0.14393.8519 — https://support.microsoft.com/help/5066836
6.3.9600.22824 — https://support.microsoft.com/help/5066873
Vulnerabilities 1
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Medium 6.5
NTLM Hash Disclosure Spoofing Vulnerability
External control of file name or path in Windows Core Shell allows an unauthorized attacker to perform spoofing over a network.
Revision history
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#1
Information published.
References
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CVE-2025-59244 NTLM Hash Disclosure Spoofing Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-59244
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Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
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Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
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Common Vulnerability Scoring System
https://www.first.org/cvss