Information
Windows Server 2019 must be configured to prevent anonymous users from having the same permissions as the Everyone group.
GROUP ID:V-205915
RULE ID:SV-205915r991589
Access by anonymous users must be restricted. If this setting is enabled, anonymous users have the same rights and permissions as the built-in Everyone group. Anonymous users must not have these permissions or rights.
Solution
Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> 'Network access: Let Everyone permissions apply to anonymous users' to 'Disabled'.