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Vulnerability · Published Apr 8, 2025 · Assigned by microsoft

CVE-2025-27479Kerberos Key Distribution Proxy Service Denial of Service Vulnerability

High 7.5

In plain English

A high-severity security flaw 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 2.3% (higher than 83% of all known vulnerabilities).

Severity (CVSS 3.1)7.5High
Exploit odds (30 days)2.3%top 16.9% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack toolingNoneno public tooling known

Official description

Insufficient resource pool in Windows Kerberos allows an unauthorized attacker to deny service over a network.

Affected products (as reported)

VendorProductVersions
Microsoft Windows Server 2012 6.2.9200.0 – before 6.2.9200.25423
Microsoft Windows Server 2012 (Server Core installation) 6.2.9200.0 – before 6.2.9200.25423
Microsoft Windows Server 2012 R2 6.3.9600.0 – before 6.3.9600.22523
Microsoft Windows Server 2012 R2 (Server Core installation) 6.3.9600.0 – before 6.3.9600.22523
Microsoft Windows Server 2016 10.0.14393.0 – before 10.0.14393.7969
Microsoft Windows Server 2016 (Server Core installation) 10.0.14393.0 – before 10.0.14393.7969
Microsoft Windows Server 2019 10.0.17763.0 – before 10.0.17763.7136
Microsoft Windows Server 2019 (Server Core installation) 10.0.17763.0 – before 10.0.17763.7136
Microsoft Windows Server 2022 10.0.20348.0 – before 10.0.20348.3453
Microsoft Windows Server 2022, 23H2 Edition (Server Core installation) 10.0.25398.0 – before 10.0.25398.1551
Microsoft Windows Server 2025 10.0.26100.0 – before 10.0.26100.3775
Microsoft Windows Server 2025 (Server Core installation) 10.0.26100.0 – before 10.0.26100.3775

Weakness: CWE-410 · Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H/E:U/RL:O/RC:C

References