Microsoft has issued security updates for Exchange 2013, 2016, and 2019. The updates can only be applied to servers running up-to-date cumulative updates. Organizations running Exchange 2016 or 2019 should apply the updates as a matter of urgency because of a known vulnerability circulating in the wild.
Microsoft has released security updates for Exchange 2013, Exchange 2016, and Exchange 2019 to fix some remote code execution vulnerabilities. It's time to update your on-premises servers again, including those used for hybrid management. Let's not give those nasty hackers any easy targets to attack.
Microsoft has issued critical security updates for Exchange on-premises servers. The fixes close off four known vulnerabilities which expose Exchange to day-zero attacks. It's important to apply these updates ASAP.
Microsoft has released new cumulative updates for Exchange Server 2016, Exchange Server 2013, and Exchange Server 2010 SP3 in June 2018.
Microsoft has released a critical security update for a memory corruption vulnerability in all versions of Exchange Server.
Microsoft has released a critical security update for Exchange Server 2007, 2010 and 2013.