Microsoft has released Update Rollup 11 for Exchange Server 2010 Service Pack 3.
From the Microsoft Exchange Team blog:
This release provides an important fix for an Information Store crash when customers are upgrading their Lync server infrastructure to Skype for Business. Exchange Server 2010 is in extended support and will receive security and time zone fixes on-demand on a go-forward basis.
Exchange Server 2010 Service Pack 3 Update Rollup 11, is the minimum version of Exchange Server 2010 which will be supported in a coexistence deployment with Exchange Server 2016.
Update Rollup 11 can be downloaded from Microsoft here.
The standard order of deployment for Exchange Server 2010 updates applies.