V-228370
SV-228370r879584_rule
CAT II
Exchange Local machine policy must require signed scripts.
From: Microsoft Exchange 2016 Mailbox Server Security Technical Implementation Guide (V2R6)
Description
<VulnDiscussion>Scripts often provide a way for attackers to infiltrate a system, especially scripts downloaded from untrusted locations. By setting machine policy to prevent unauthorized script executions, unanticipated system impacts can be avoided. Failure to allow only signed remote scripts reduces the attack vector vulnerabilities from unsigned remote scripts.</VulnDiscussion><FalsePositives></FalsePositives><FalseNegatives></FalseNegatives><Documentable>false</Documentable><Mitigations></Mitigations><SeverityOverrideGuidance></SeverityOverrideGuidance><PotentialImpacts></PotentialImpacts><ThirdPartyTools></ThirdPartyTools><MitigationControl></MitigationControl><Responsibility></Responsibility><IAControls></IAControls>
Check Procedure
Open the Exchange Management Shell and enter the following command:
Get-ExecutionPolicy
If the value returned is not "RemoteSigned", this is a finding.
Fix Text
Open the Exchange Management Shell and enter the following command:
Set-ExecutionPolicy RemoteSigned
CCI Reference
CCI-001749- Created
- 2026-01-14 17:55:45
- Last Updated
- 2026-04-07 20:08:23