Microsoft alert us yesterday that they release somes patches for multiple different on-premises Microsoft Exchange Server zero-day vulnerabilities that are being exploited by a nation-state affiliated group.

The vulnerabilities exist in on-premises Exchange Servers 2010, 2013, 2016, and 2019.

Our Exchanger Servers have been directly patched are fully protected 

For more info https://www.zdnet.com/article/update-immediately-microsoft-rushes-out-patches-for-exchange-server-zero-day-attacks/