On December 8, 2020 Microsoft released a number of security updates for Exchange server. Despite the fact that Exchange 2010 is out of support at all, an important security update for Exchange 2010 was released as well.

Notes:

• The security updates are specific for each Cumulative Updates.
• The upcoming CU’s for Exchange 2016 and Exchange 2019 will contain this security fix.
• Install the security updates from an elevated command prompt.