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Microsoft Security

Microsoft 365 Defender Team Posts

Microsoft 365 Defender Team

Automatic on-premises Exchange Server mitigation now in Microsoft Defender Antivirus 

Microsoft Defender Antivirus and System Center Endpoint Protection will automatically mitigate CVE-2021-26855 on any vulnerable Exchange Server on which it is deployed. We have taken this additional step to further support our customers who are still vulnerable and have not yet implemented the complete security update.