CVE-2025-50169

Windows SMB Remote Code Execution Vulnerability

CVE-2025-50169 is fixed in 4 products on 1 platform, first by KB5063878, released August 12, 2025. It is not reported as exploited. Patch Radar priority: High.

High

CVSS

7.5

Important

Exploitation

None reported

Exploitation Unlikely

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0069

53rd percentile

<p>Concurrent execution using shared resource with improper synchronization ('race condition') in Windows SMB allows an unauthorized attacker to execute code over a network.</p>

Where it's fixed

Product	Fixed in	Fix	Released
Microsoft
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 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

Details

Published
August 12, 2025
Weakness
Concurrent Execution using Shared Resource with Improper Synchronization ('Race Condition')
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-50169

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