CVE-2025-26647

HIGH
2025-04-08 [email protected]
8.8
CVSS 3.1
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CVSS Vector

CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Attack Vector
Network
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

Lifecycle Timeline

2
Analysis Generated
Mar 28, 2026 - 18:35 vuln.today
CVE Published
Apr 08, 2025 - 18:15 nvd
HIGH 8.8

Tags

Microsoft Information Disclosure Windows Server 2008 Windows Server 2012 Windows Server 2016 Windows Server 2019 Windows Server 2022 Windows Server 2022 23h2 Windows Server 2025 Windows

Description

Improper input validation in Windows Kerberos allows an authorized attacker to elevate privileges over a network.

Analysis

Improper input validation in Windows Kerberos allows an authorized attacker to elevate privileges over a network. Rated high severity (CVSS 8.8), this vulnerability is remotely exploitable, low attack complexity. No vendor patch available.

Technical Context

This vulnerability is classified under CWE-20. Improper input validation in Windows Kerberos allows an authorized attacker to elevate privileges over a network. Affected products include: Microsoft Windows Server 2008, Microsoft Windows Server 2012, Microsoft Windows Server 2016, Microsoft Windows Server 2019, Microsoft Windows Server 2022.

Affected Products

Microsoft Windows Server 2008, Microsoft Windows Server 2012, Microsoft Windows Server 2016, Microsoft Windows Server 2019, Microsoft Windows Server 2022.

Remediation

No vendor patch is available at time of analysis. Monitor vendor advisories for updates. Apply vendor patches when available. Implement network segmentation and monitoring as interim mitigations.

Priority Score

46
Low Medium High Critical
KEV: 0
EPSS: +1.9
CVSS: +44
POC: 0

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CVE-2025-26647 vulnerability details – vuln.today
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