Exchange2019-CU12-KBXXXXXX-圆4-en.msp.Įxchange servers running as part of hybrid deployment are managed through PowerShell, and thus need to be receive this patch and eventually be enabled for payload signing. When downloading, the security update will carry the same name for different Cumulative Updates, and I would suggest tagging the file name with the CU level when archiving it, e.g. You cannot apply the update for Exchange 2019 CU12 to Exchange 2019 CU11. Security updates are Cumulative Update level specific. Store Worker Process stops and returns “System.NullReferenceExceptions” multiple times per dayĬan’t record or play in Exchange Unified MessagingĮxchange Application log is flooded with Event ID 6010 Note that all your Exchange servers need to run this SU before you enable signing, as each Exchange server needs to understand the signing.Īpart from security fixes, these SUs also fix the following: Issue In order to verify or configure signing, a script has been published here, or check here if you prefer manual steps. TLDR it allows for signing data to identify possible tampering. Recommendation is to upgrade to a more recent version.Īpart from fixing security issues, these SUs also introduce support for certificate-based signing of PowerShell serialization payloads. On another note, Exchange 2013 support will end in April, 2023, meaning it it will stop receiving security updates. In case you are wondering why Exchange Server 2016 CU22 is not mentioned: CU22 went out of support, and only CU23 will continue to receive security updates. Note that only CVE-2023-21762 applies to Exchange Server 2013: Exchange The Security Updates for each Exchange Server version are linked below. The vulnerabilities addressed in these Security Updates are: Vulnerability The Exchange product group released January updates for Exchange Server 2013, 20.
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