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Microsoft Releases Out-of-Band Security Updates for Exchange Server – 08.03.2021


Microsoft has released out-of-band security updates to address vulnerabilities affecting Microsoft Exchange Server 2013, 2016, and 2019. A remote attacker can exploit three remote code execution vulnerabilities—CVE-2021-26857, CVE-2021-26858, and CVE-2021-27065—to take control of an affected system and can exploit one vulnerability—CVE-2021-26855—to obtain access to sensitive information.

CERT Bulgaria encourages users and administrators to review the Microsoft blog post and apply the necessary updates or workarounds.


08/03/2021

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