Microsoft has released Update Rollup 5 version 2 for Microsoft Exchange Server 2010 Service Pack 2 (SP2). This update is dated December 11, 2012.
Please read the Update description here :
Description of Update Rollup 5 version 2 for Exchange Server 2010 Service Pack 2http://support.microsoft.com/kb/2785908
The download link is :
Download Update Rollup 5-v2 for Exchange Server 2010 Service Pack 2 (KB2785908) from Official Microsoft Download Centerhttp://www.microsoft.com/en-us/download/details.aspx?id=36017
Have a great day,