Cumulative Update (CU) 4 which replaces Cumulative Update 3 for Configuration manager 2012 SP1 is now available that describes the issues that are fixed and the functionality updated.
CU4 addresses the below issues that are fixed:
- Software distribution
- Operating System Deployment
- Administrative console
- Application Virtualization
- Endpoint Protection
- Site Server
For all the details and a download link ,refer http://support.microsoft.com/kb/2922875
Restart Information: You do not have to restart the computer after you apply this update.
Note :It is recommend to close the Configuration Manager Administrator Console before you install this update.