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Local accounts with blank passwords must be restricted to prevent access from the network.


Finding ID Version Rule ID IA Controls Severity
V-220910 WN10-SO-000015 SV-220910r569187_rule Medium
An account without a password can allow unauthorized access to a system as only the username would be required. Password policies should prevent accounts with blank passwords from existing on a system. However, if a local account with a blank password did exist, enabling this setting will prevent network access, limiting the account to local console logon only.
Microsoft Windows 10 Security Technical Implementation Guide 2023-09-29


Check Text ( C-22625r555215_chk )
If the following registry value does not exist or is not configured as specified, this is a finding:

Registry Path: \SYSTEM\CurrentControlSet\Control\Lsa\

Value Name: LimitBlankPasswordUse

Value Type: REG_DWORD
Value: 1
Fix Text (F-22614r555216_fix)
Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Accounts: Limit local account use of blank passwords to console logon only" to "Enabled".