CVE-2026-20872
NTLM Hash Disclosure Spoofing Vulnerability
6.5CVSSMEDIUM
Description
External control of file name or path in Windows NTLM allows an unauthorized attacker to perform spoofing over a network.
CVSS Vector Breakdown
Exploitability
AV:NAttack VectorNetwork
AC:LAttack ComplexityLow
PR:NPrivileges RequiredNone
UI:RUser InteractionRequired
Scope
S:UScopeUnchanged
Impact
C:HConfidentialityHigh
I:NIntegrityNone
A:NAvailabilityNone
Weaknesses
Affected Products
and 57 more affected products View all →
Exploitability
Official Patch Available
References
Timeline
Published
Jan 13, 2026
Last Updated
Jan 15, 2026
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