Windows 10 1607
CVE-2026-20925
MEDIUM
Severity by source
AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N
Primary rating from Vendor (microsoft) · only source for this CVE.
CVSS VectorVendor: microsoft
Lifecycle Timeline
2DescriptionCVE.org
External control of file name or path in Windows NTLM allows an unauthorized attacker to perform spoofing over a network.
AnalysisAI
Windows NTLM authentication across multiple Windows versions (10, Server 2008/2019) allows remote attackers to manipulate file name or path parameters without authentication, enabling network-based identity spoofing attacks. The vulnerability requires user interaction and has no available patch, affecting systems still running older Windows Server editions alongside current Windows 10 releases. An attacker could impersonate legitimate services or users to compromise trust in networked communications.
Technical ContextAI
Affects Windows 10 1607. External control of file name or path in Windows NTLM allows an unauthorized attacker to perform spoofing over a network.
RemediationAI
Monitor vendor advisories for a patch. Restrict network access to the affected service where possible.
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Same weakness CWE-73 – External Control of File Name or Path
View allSame technique Authentication Bypass
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External POC / Exploit Code
Leaving vuln.today