Download Microsoft Exchange Server 2016 CU23 SU11

Microsoft's Exchange Server offers functionality to provide e-mail and calendars, and is mainly used in businesses. Although Microsoft is heavily committed to cloud technology with Office 365, on-premise versions are still being released. For a general discussion about Exchange Server 2016, please visit the General Exchange 2016 topic on our Forum. The Exchange team has released the twenty-third Cumulative Update for Exchange Server 2016. The corresponding KB article with number 5032147 mentions the following changes:

Description of the security update for Microsoft Exchange Server 2016: November 14, 2023 (KB5032147)

This security update rollup resolves vulnerabilities in Microsoft Exchange Server. To learn more about these vulnerabilities, see the following Common Vulnerabilities and Exposures (CVE):

• CVE-2023-36439 – Microsoft Exchange Server Remote Code Execution Vulnerability
• CVE-2023-36050 – Microsoft Exchange Server Spoofing Vulnerability
• CVE-2023-36039 – Microsoft Exchange Server Spoofing Vulnerability
• CVE-2023-36035 – Microsoft Exchange Server Spoofing Vulnerability

Issues that are fixed in this update

• Signing of the serialization payload fails to run the few cmdlets
• Unable to migrate mailbox as communication error parameter exception occurs
• InvalidResponseException when you try to run Export-UMPrompt

Features that are added in this update

• Certificate-based signing of PowerShell serialization payloads enabled in November 2023 Exchange SU