CVE-2025-50171

Remote Desktop Spoofing Vulnerability

CVE-2025-50171 is fixed in 16 products on 1 platform, first by KB5063709, released August 12, 2025. It is not reported as exploited. Patch Radar priority: High.

High
CVSS
9.1
Important
Exploitation
None reported
Exploitation Less Likely
CISA KEV
Not listed
Not in the Known Exploited Vulnerabilities catalog
EPSS
0.0104
64th percentile

<p>Missing authorization in Remote Desktop Server allows an unauthorized attacker to perform spoofing over a network.</p>

Where it's fixed

ProductFixed inFixReleased
Microsoft
Windows 10 Version 21H2 for 32-bit Systems KB5063709 Aug 12, 2025
Windows 10 Version 21H2 for ARM64-based Systems KB5063709 Aug 12, 2025
Windows 10 Version 21H2 for x64-based Systems KB5063709 Aug 12, 2025
Windows 10 Version 22H2 for 32-bit Systems KB5063709 Aug 12, 2025
Windows 10 Version 22H2 for ARM64-based Systems KB5063709 Aug 12, 2025
Windows 10 Version 22H2 for x64-based Systems KB5063709 Aug 12, 2025
Windows 11 Version 22H2 for x64-based Systems KB5063875 Aug 12, 2025
Windows 11 Version 23H2 for ARM64-based Systems KB5063875 Aug 12, 2025
Windows 11 Version 23H2 for x64-based Systems KB5063875 Aug 12, 2025
Windows 11 Version 24H2 for ARM64-based Systems 26100.4946 KB5063878 Aug 12, 2025
Windows 11 Version 24H2 for ARM64-based Systems 26100.4851 KB5064010 Aug 12, 2025
Windows 11 Version 24H2 for x64-based Systems 26100.4946 KB5063878 Aug 12, 2025
Windows 11 Version 24H2 for x64-based Systems 26100.4851 KB5064010 Aug 12, 2025
Windows Server 2022 20348.4052 KB5063880 Aug 12, 2025
Windows Server 2022 20348.3989 KB5063812 Aug 12, 2025
Windows Server 2022 (Server Core installation) 20348.4052 KB5063880 Aug 12, 2025
Windows Server 2022 (Server Core installation) 20348.3989 KB5063812 Aug 12, 2025
Windows Server 2022, 23H2 Edition (Server Core installation) 25398.1791 KB5063899 Aug 12, 2025
Windows Server 2025 26100.4946 KB5063878 Aug 12, 2025
Windows Server 2025 26100.4851 KB5064010 Aug 12, 2025
Windows Server 2025 (Server Core installation) 26100.4946 KB5063878 Aug 12, 2025
Windows Server 2025 (Server Core installation) 26100.4851 KB5064010 Aug 12, 2025

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