Detections
Analytics
WN25-SO-000270 - Windows Server 2025 must prevent NTLM from falling back to a Null session.
Information
NTLM sessions that are allowed to fall back to Null (unauthenticated) sessions may gain unauthorized access.Solution
Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> Network security: Allow LocalSystem NULL session fallback to 'Disabled'.See Also
https://dl.dod.cyber.mil/wp-content/uploads/stigs/zip/U_MS_Windows_Server_2025_V1R4_STIG.zip
Item Details
Audit Name: DISA Microsoft Windows Server 2025 STIG v1r4
Category: CONFIGURATION MANAGEMENT
References: 800-53|CM-6b., CAT|II, CCI|CCI-000366, Rule-ID|SV-278221r1268251_rule, STIG-ID|WN25-SO-000270, Vuln-ID|V-278221
Plugin: Windows
Control ID: 45f15b7906b79a28d599117d5170148cb443aa79f5907085071b0495ee7e5fea