CVE-2026-50508

Windows NTLM Spoofing Vulnerability

State: Published
Severity: 6.5 Medium
Published: Jun 9, 2026
Updated: Sep 24, 2026
Reserved: Jun 4, 2026

Description

Exposure of sensitive information to an unauthorized actor in Windows NTLM allows an unauthorized attacker to perform spoofing over a network.

Scores

CVSS	Score	Vector	Source
3.1	6.5 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:N/A:N/E:U/RL:O/RC:C	microsoft

Weaknesses

CWE-200 Exposure of Sensitive Information to an Unauthorized Actor

Affected Products

Product	Versions
Windows 10 Version 1607Microsoft	10.0.14393.0 to before 10.0.14393.9234Affected
Windows 11 version 22H2Microsoft	10.0.22621.0 to before 10.0.22631.7219Affected
Windows Server 2012Microsoft	6.2.9200.0 to before 6.2.9200.26132Affected
Windows Server 2012 (Server Core installation)Microsoft	6.2.9200.0 to before 6.2.9200.26132Affected
Windows Server 2012 R2Microsoft	6.3.9600.0 to before 6.3.9600.23228Affected
Windows Server 2012 R2 (Server Core installation)Microsoft	6.3.9600.0 to before 6.3.9600.23228Affected
Windows Server 2016Microsoft	10.0.14393.0 to before 10.0.14393.9234Affected
Windows Server 2016 (Server Core installation)Microsoft	10.0.14393.0 to before 10.0.14393.9234Affected
Windows Server 2022Microsoft	10.0.20348.0 to before 10.0.20348.5256Affected
Windows Server version 2004Microsoft	10.0.0 to before 10.0.19045.7417Affected

References

Windows NTLM Spoofing Vulnerabilityvendor-advisorypatch

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