Improper input validation in Microsoft Windows_server_2008
CVE-2025-26647
Improper input validation in Windows Kerberos allows an authorized attacker to elevate privileges over a network.
Vulnerability class: Drupalgeddon 2 (CVE-2018-7600)
EPSS: 0.020 (77.9th percentile) — read the EPSS interpretation.
CVSS v3 metric
CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.
Affected products
- Microsoft Windows_server_2008 — versions r2
- Microsoft Windows Server 2008 R2 Service Pack 1 — versions 6.1.7601.0
- Microsoft Windows Server 2008 R2 Service Pack 1 (Server Core Installation) — versions 6.1.7601.0
- Microsoft Windows Server 2008 Service Pack 2 — versions 6.0.6003.0
- Microsoft Windows Server 2008 Service Pack 2 (Server Core Installation) — versions 6.0.6003.0
- Microsoft Windows Server 2012 — versions 6.2.9200.0
- Microsoft Windows_server_2012 — versions r2
- 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
Weakness classification (CWE)
Public proof-of-concept exploits
References
- secure@microsoft.com (vendor-advisory, patch, Vendor Advisory)
Frequently asked questions
- What is CVE-2025-26647?
- CVE-2025-26647 is a high-severity vulnerability in Microsoft Windows_server_2008, classified under Improper Input Validation. CVSS score: 8.8/10. Published 2025-04-08.
- How severe is CVE-2025-26647?
- High severity. CVSS v3 base score is 8.8 out of 10.
- Is CVE-2025-26647 known to be exploited?
- 2 public proof-of-concept repositories are indexed. Not currently listed in the CISA KEV catalog.