Vulnerability in Microsoft Windows Server 2012
CVE-2025-27479
Insufficient resource pool in Windows Kerberos allows an unauthorized attacker to deny service over a network.
EPSS: 0.293 (96.7th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 7.5 (High). 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.
Affected products
- Microsoft Windows Server 2012 — versions 6.2.9200.0
- Microsoft Windows Server 2012 R2 — versions 6.3.9600.0
- Microsoft Windows Server 2012 R2 (Server Core Installation) — versions 6.3.9600.0
- Microsoft Windows Server 2012 (Server Core Installation) — versions 6.2.9200.0
- Microsoft Windows Server 2016 — versions 10.0.14393.0
- Microsoft Windows Server 2016 (Server Core Installation) — versions 10.0.14393.0
- Microsoft Windows Server 2019 — versions 10.0.17763.0
- Microsoft Windows Server 2019 (Server Core Installation) — versions 10.0.17763.0
- Microsoft Windows Server 2022 — versions 10.0.20348.0
- Microsoft Windows Server 2022, 23h2 Edition (Server Core Installation) — versions 10.0.25398.0
Weakness classification (CWE)
Public proof-of-concept exploits
References
- Kerberos Key Distribution Proxy Service Denial of Service Vulnerability (vendor-advisory, patch)
Frequently asked questions
- What is CVE-2025-27479?
- CVE-2025-27479 is a high-severity vulnerability in Microsoft Windows Server 2012, classified under CWE-410. CVSS score: 7.5/10. Published 2025-04-08.
- How severe is CVE-2025-27479?
- High severity. CVSS v3 base score is 7.5 out of 10.
- Is CVE-2025-27479 known to be exploited?
- 1 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.