Denial of service in Microsoft Kerberos Key Distribution Proxy Service

1) Insufficient Resource Pool

EUVDB-ID: #VU107276

Risk: High

CVSSv4.0: 6.6 [CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N/E:U/U:Amber]

CVE-ID: CVE-2025-27479

CWE-ID: CWE-410 - Insufficient Resource Pool

Exploit availability: No

Description

The vulnerability allows a remote attacker to perform a denial of service (DoS) attack.

The vulnerability exists due to insufficient resource pool in Kerberos Key Distribution Proxy Service. A remote attacker can cause a denial of service condition on the target system.

Mitigation

Install updates from vendor's website.

Vulnerable software versions

Windows Server: 2012 Gold - 2025 10.0.26100.3476

CPE2.3

• cpe:2.3:o:microsoft:windows_server:2012:6.2.9200.25368:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_server:2016:10.0.14393.7876:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_server:2019:10.0.17763.7009:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_server:2022_23H2:10.0.25398.1486:*:*:*:*:*:*
• cpe:2.3:o:microsoft:windows_server:2025:10.0.26100.3476:*:*:*:*:*:*

External links

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-27479

Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.