CVE-2025-21291

Windows Direct Show Remote Code Execution Vulnerability

CVE-2025-21291 is fixed in 17 products on 1 platform, first by KB5050008, released January 14, 2025. It is not reported as exploited. Patch Radar priority: High.

High

CVSS

8.8

Important

Exploitation

None reported

Exploitation Less Likely

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0142

72nd percentile

Where it's fixed

Product	Fixed in	Fix	Released
Microsoft
Windows 10 Version 1809 for 32-bit Systems	17763.6775	KB5050008	Jan 14, 2025
Windows 10 Version 1809 for x64-based Systems	17763.6775	KB5050008	Jan 14, 2025
Windows 10 Version 21H2 for 32-bit Systems		KB5049981	Jan 14, 2025
Windows 10 Version 21H2 for ARM64-based Systems		KB5049981	Jan 14, 2025
Windows 10 Version 21H2 for x64-based Systems		KB5049981	Jan 14, 2025
Windows 10 Version 22H2 for 32-bit Systems		KB5049981	Jan 14, 2025
Windows 10 Version 22H2 for ARM64-based Systems		KB5049981	Jan 14, 2025
Windows 10 Version 22H2 for x64-based Systems		KB5049981	Jan 14, 2025
Windows 11 Version 22H2 for ARM64-based Systems		KB5050021	Jan 14, 2025
Windows 11 Version 22H2 for x64-based Systems		KB5050021	Jan 14, 2025
Windows 11 Version 23H2 for ARM64-based Systems		KB5050021	Jan 14, 2025
Windows 11 Version 23H2 for x64-based Systems		KB5050021	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

Details

Published
January 14, 2025
Weakness
Double Free
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21291

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