Microsoft Windows 11

The machine inactivity limit must be set to 15 minutes, locking the system with the screensaver

STIG ID: WN11-SO-000070 | SRG: SRG-OS-000279-GPOS-00109 | Severity: Medium | CCI: CCI-001133,CCI-002361 | Vulnerability ID: V-253444

Description

Unattended systems are susceptible to unauthorized use and must be locked when unattended. The screen saver must be set at a maximum of 15 minutes and be password protected. This protects critical and sensitive data from exposure to unauthorized personnel with physical access to the computer.Satisfies: SRG-OS-000279-GPOS-00109, SRG-OS-000163-GPOS-00072

Check

C-56897r829414_chk

If the following registry value does not exist or is not configured as specified, this is a finding:Registry Hive: HKEY_LOCAL_MACHINERegistry Path: \SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\Value Name: InactivityTimeoutSecsValue Type: REG_DWORDValue: 0x00000384 (900) (or less, excluding "0" which is effectively disabled)

Fix

F-56847r829415_fix

Configure the policy value for Computer Configuration >> Windows Settings >> Security Settings >> Local Policies >> Security Options >> "Interactive logon: Machine inactivity limit" to "900" seconds" or less, excluding "0" which is effectively disabled.