Silverfort has discovered that a misconfiguration can bypass an Active Directory Group Policy designed to disable NTLMv1, allowing NTLMv1 authentications to persist. Microsoft announced the full decommission of NTLMv1 from Windows 2025. Unified Identity Security company Silverfort has discovered a security vulnerability involving a misconfiguration in Active Directory. This vulnerability allows NTLMv1 authentication to persist despite attempts to disable it through Group Policy.
NTLMv1 is an o