CVE-2025-21293
HIGHCVSS Vector
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Lifecycle Timeline
3Tags
Description
Active Directory Domain Services Elevation of Privilege Vulnerability
Analysis
Active Directory Domain Services contains an elevation of privilege vulnerability that allows authenticated domain users to escalate to domain administrator. The vulnerability enables lateral movement and complete domain compromise from any authenticated position within the Active Directory environment.
Technical Context
This vulnerability in Active Directory Domain Services allows a regular authenticated domain user to elevate their privileges to domain administrator. The specific mechanism involves improper access control in AD DS that can be exploited through crafted LDAP or Kerberos operations. Successful exploitation grants the attacker full control over the Active Directory domain.
Affected Products
['Windows Server 2016/2019/2022/2025', 'Active Directory Domain Services']
Remediation
Apply the January 2025 Microsoft security update immediately. Implement tiered administration model to limit blast radius of privilege escalation. Monitor AD for unexpected group membership changes, especially to privileged groups. Deploy Microsoft ATA or Defender for Identity to detect anomalous AD operations.
Priority Score
Share
External POC / Exploit Code
Leaving vuln.today