CVE-2025-49735

HIGH

Windows Server 2012-2025 Unauthenticated RCE via KDC Proxy Service Use-After-Free

Title source: llm

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

Core 1

Core References

Vendor Advisory vendor-advisory patch

CVSS v3 8.1

EPSS 0.0096

EPSS Percentile 76.7%

Attack Vector NETWORK

CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H

Vulnrichment

Exploitation none

Automatable no

Technical Impact total

CWE

CWE-416

Status published

Products (7)

microsoft/windows_server_2012

microsoft/windows_server_2012 r2

microsoft/windows_server_2016 < 10.0.14393.8148

microsoft/windows_server_2019 < 10.0.17763.7434

microsoft/windows_server_2022 < 10.0.20348.3807

microsoft/windows_server_2022_23h2 < 10.0.25398.1665

microsoft/windows_server_2025 < 10.0.26100.4349

Published Jul 08, 2025

Tracked Since Feb 18, 2026