Exchange Online is not affected.įor more information, please see the Microsoft Security Response Center (MSRC) blog.įor technical details of these exploits and how to help with detection, please see HAFNIUM Targeting Exchange Servers. There is a scripted version of this check available on GitHub here. The vulnerabilities affect Microsoft Exchange Server. NEW! Security Updates for older Cumulative Updates of Exchange Server (the list is now finalized)īecause we are aware of active exploits of related vulnerabilities in the wild (limited targeted attacks), our recommendation is to install these updates immediately to protect against these attacks.Exchange Server 2019 (update requires CU 8 or CU 7).Exchange Server 2016 (update requires CU 19 or CU 18).Exchange Server 2013 (update requires CU 23).Exchange Server 2010 (update requires SP 3 or any SP 3 RU – this is a Defense in Depth update).msp from elevated command prompt (see Known Issues in update KB articles) IMPORTANT:If manually installing security updates, you must install. Security updates are available for the following specific versions of Exchange: Microsoft has released a set of out of band security updates for vulnerabilities for the following versions of Exchange Server: ![]() Note: this post is getting frequent updates please keep checking back.
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