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Critical MSRC-CVE-2025-33071 1 CVE

Windows KDC Proxy Service (KPSSVC) Remote Code Execution Vulnerability

Published Jun 10, 2025 · Updated Jun 10, 2025

Vendor: Microsoft

Summary

Impact: Remote Code Execution. Microsoft rating: Critical. Not known to be exploited — Exploitation More Likely. Customer action: Required.

Details

How could an attacker exploit this vulnerability?
An unauthenticated attacker could use a specially crafted application to leverage a cryptographic protocol vulnerability in Kerberos Key Distribution Center Proxy Service to perform remote code execution against the target.

Are all Windows Servers affected by this vulnerability?
This vulnerability only affects Windows Servers that are configured as a [MS-KKDCP]: Kerberos Key Distribution Center (KDC) Proxy Protocol server. Domain controllers are not affected.

According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?
Successful exploitation of this vulnerability requires an attacker to win a race condition.

Security updates
10.0.17763.7434 — https://support.microsoft.com/help/5060531
10.0.20348.3807 — https://support.microsoft.com/help/5060526
10.0.20348.3745 — https://support.microsoft.com/help/5060525
10.0.26100.4349 — https://support.microsoft.com/help/5060842
10.0.26100.4270 — https://support.microsoft.com/help/5060841
10.0.25398.1665 — https://support.microsoft.com/help/5060118
10.0.14393.8148 — https://support.microsoft.com/help/5061010
6.2.9200.25522 — https://support.microsoft.com/help/5061059
6.3.9600.22620 — https://support.microsoft.com/help/5061018

Vulnerabilities 1

Revision history

  1. #1

    Information published.

References