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Vulnerability · Published Jul 8, 2025 · Assigned by microsoft

CVE-2025-49735Windows KDC Proxy Service (KPSSVC) Remote Code Execution Vulnerability

High 8.1

In plain English

A high-severity use-after-free in Windows Server 2012 from Microsoft. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.2% (higher than 68% of all known vulnerabilities).

Severity (CVSS 3.1)8.1High
Exploit odds (30 days)1.2%top 31.7% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

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

Affected products (as reported)

VendorProductVersions
Microsoft Windows Server 2012 6.2.9200.0 – before 6.2.9200.25522
Microsoft Windows Server 2012 (Server Core installation) 6.2.9200.0 – before 6.2.9200.25522
Microsoft Windows Server 2012 R2 6.3.9600.0 – before 6.3.9600.22620
Microsoft Windows Server 2012 R2 (Server Core installation) 6.3.9600.0 – before 6.3.9600.22620
Microsoft Windows Server 2016 10.0.14393.0 – before 10.0.14393.8148
Microsoft Windows Server 2016 (Server Core installation) 10.0.14393.0 – before 10.0.14393.8148
Microsoft Windows Server 2019 10.0.17763.0 – before 10.0.17763.7434
Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.0 – before 10.0.17763.7434
Microsoft Windows Server 2022 10.0.20348.0 – before 10.0.20348.3807
Microsoft Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.0 – before 10.0.25398.1665
Microsoft Windows Server 2025 10.0.26100.0 – before 10.0.26200.4349
Microsoft Windows Server 2025 (Server Core installation) 10.0.26100.0 – before 10.0.26200.4349

Weakness: CWE-416 · Vector: CVSS:3.1/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

References