Microsoft · Active Directory Domain Services · CVE-2025-21293
**Name of the Vulnerable Software and Affected Versions**
Active Directory Domain Services (affected versions not specified)
**Description**
A critical elevation-of-privilege vulnerability in Active Directory Domain Services allows attackers to gain SYSTEM-level access. The vulnerability is related to errors in access control. Exploitation of the vulnerability can allow an attacker to elevate their privileges to the system level. The `Network Configuration Operators` group has the right to create subkeys in the Windows registry for the `DnsCache` and `NetBT` services, which allows creating subparameters in the registry of these services. Using this capability, an attacker can register their own performance counters, which ultimately allows executing arbitrary code with system privileges.
**Recommendations**
To protect against this vulnerability, it is recommended to limit the rights of the `Network Configuration Operators` group and install the corresponding security updates from Microsoft.
As a temporary workaround, consider restricting access to the `DnsCache` and `NetBT` services in the Windows registry to minimize the risk of exploitation.
At the moment, there is no information about a newer version that contains a fix for this vulnerability.