CVE-2025-21297

Windows Remote Desktop Services Remote Code Execution Vulnerability

CVE-2025-21297 is fixed in 15 products on 1 platform, first by KB5049993, released January 14, 2025. It is not reported as exploited. Patch Radar priority: Urgent.

Urgent

CVSS

8.1

Critical

Exploitation

None reported

Exploitation Less Likely

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0146

73rd percentile

Where it's fixed

Product	Fixed in	Fix	Released
Microsoft
Windows Server 2008 R2 for x64-based Systems Service Pack 1		KB5050049	Jan 14, 2025
Windows Server 2008 R2 for x64-based Systems Service Pack 1		KB5050006	Jan 14, 2025
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)		KB5050049	Jan 14, 2025
Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)		KB5050006	Jan 14, 2025
Windows Server 2012		KB5050004	Jan 14, 2025
Windows Server 2012 (Server Core installation)		KB5050004	Jan 14, 2025
Windows Server 2012 R2		KB5050048	Jan 14, 2025
Windows Server 2012 R2 (Server Core installation)		KB5050048	Jan 14, 2025
Windows Server 2016	14393.7699	KB5049993	Jan 14, 2025
Windows Server 2016 (Server Core installation)	14393.7699	KB5049993	Jan 14, 2025
Windows Server 2019	17763.6775	KB5050008	Jan 14, 2025
Windows Server 2019 (Server Core installation)	17763.6775	KB5050008	Jan 14, 2025
Windows Server 2022	20348.3091	KB5049983	Jan 14, 2025
Windows Server 2022 (Server Core installation)	20348.3091	KB5049983	Jan 14, 2025
Windows Server 2022, 23H2 Edition (Server Core installation)	25398.1369	KB5049984	Jan 14, 2025
Windows Server 2025	26100.2894	KB5050009	Jan 14, 2025
Windows Server 2025 (Server Core installation)	26100.2894	KB5050009	Jan 14, 2025

Details

Published
January 14, 2025
Weakness
Use After Free
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21297

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