Microsoft released the quarterly servicing update to Exchange Server 2013 – CU12, first CU for Exchange Server 2016 and updated UM Language Packs.
Exchange Server 2016 receives its first Cumulative Update, and Exchange Server 2013 Cumulative Update 12 is also released. Exchange Server 2007 and Exchange Server 2010 Update Rollups provide an updated OWA S/MIME control signed with a SHA-2 certificate. A complete list of customer reported issues resolved can be found in Knowledge Base Article KB3108023.
You can read the full blog post at the Exchange Team Blog.
Download Cumulative Update 12 for Exchange Server 2013