Exchange must have the most current, approved Cumulative Update (CU) installed.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-259644	EX19-ED-000244	SV-259644r961683_rule		Medium

Description

The organization (including any contractor to the organization) must promptly install security-relevant software updates (e.g., patches, service packs, CUs, hot fixes). Flaws discovered during security assessments, continuous monitoring, incident response activities, or information system error handling must also be addressed.

STIG	Date
Microsoft Exchange 2019 Edge Server Security Technical Implementation Guide	2024-12-06

Details

Check Text (C-63383r942244_chk)

Open the Exchange Management Shell and enter the following command:

Get-ExchangeServer | Format-List Name, AdminDisplayVersion

If the value of "AdminDisplayVersion" does not return the most current, approved CU, this is a finding.

Fix Text (F-63291r942245_fix)

Install the most current, approved CU.