High MSRC-CVE-2026-50508 1 CVE

Windows NTLM Spoofing Vulnerability

Published Jun 9, 2026 · Updated Jun 9, 2026

Vendor: Microsoft

Summary

Impact: Spoofing. Microsoft rating: Important. Not known to be exploited — Exploitation More Likely. Customer action: Required.

Details

Security updates
10.0.20348.5256 — https://support.microsoft.com/help/5094128
10.0.19045.7417 — https://support.microsoft.com/help/5094127
10.0.22631.7219 — https://support.microsoft.com/help/5093998
10.0.14393.9234 — https://support.microsoft.com/help/5094122
6.2.9200.26132 — https://support.microsoft.com/help/5094042
6.3.9600.23228 — https://support.microsoft.com/help/5094041

Vulnerabilities 1

Medium 6.5

CVE-2026-50508 EPSS 11%

Windows NTLM Spoofing Vulnerability

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

Microsoft Windows Server 2022 Windows Server 2016 Windows Server 2016 (Server Core installation) Windows

Jun 9, 2026

Revision history

2026-06-09 #1
Information published.

References

CVE-2026-50508 Windows NTLM Spoofing Vulnerability - HTML
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50508
Microsoft Exploitability Index
https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1
Microsoft Support Lifecycle
https://support.microsoft.com/lifecycle
Common Vulnerability Scoring System
https://www.first.org/cvss