CVE-2025-49735

Windows KDC Proxy Service (KPSSVC) Remote Code Execution Vulnerability

CVE-2025-49735 is fixed in 13 products on 1 platform, first by KB5061010, released June 10, 2025. It is not reported as exploited, but the vendor rates exploitation more likely. Patch Radar priority: Urgent.

Urgent

CVSS

8.1

Critical

Exploitation

More likely

Vendor assessment

CISA KEV

Not listed

Not in the Known Exploited Vulnerabilities catalog

EPSS

0.0120

68th percentile

<p>Use after free in Windows KDC Proxy Service (KPSSVC) allows an unauthorized attacker to execute code over a network.</p>

Where it's fixed

Product	Fixed in	Fix	Released
Microsoft
Windows Server 2012		KB5061059	Jun 10, 2025
Windows Server 2012 (Server Core installation)		KB5061059	Jun 10, 2025
Windows Server 2012 R2		KB5061018	Jun 10, 2025
Windows Server 2012 R2 (Server Core installation)		KB5061018	Jun 10, 2025
Windows Server 2016	14393.8148	KB5061010	Jun 10, 2025
Windows Server 2016 (Server Core installation)	14393.8148	KB5061010	Jun 10, 2025
Windows Server 2019	17763.7434	KB5060531	Jun 10, 2025
Windows Server 2019 (Server Core installation)	17763.7434	KB5060531	Jun 10, 2025
Windows Server 2022	20348.3807	KB5060526	Jun 10, 2025
Windows Server 2022 (Server Core installation)	20348.3807	KB5060526	Jun 10, 2025
Windows Server 2022, 23H2 Edition (Server Core installation)	25398.1665	KB5060118	Jun 10, 2025
Windows Server 2025	26100.4349	KB5060842	Jun 10, 2025
Windows Server 2025 (Server Core installation)	26100.4349	KB5060842	Jun 10, 2025

Details

Published
July 8, 2025
Weakness
Use After Free
Vendor advisory
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-49735

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