Has SCCM 2012 R2 CU5 been installed?

After upgrading to System Center Configuration Manager 2012 R2 CU5, you will be able to identify the update as shown here.

First let us take a look at the console, after the update the console reports version 5.0.7958.1604

The console reported version 5.0.7958.1501 before updating which is 2012 R2 CU4.

The Console update is also listed in Control Panel as an Installed Update.

The site will still report version 5.00.7958.1000 after the update.

In order to check if the update has been applied we must look in the registry.

HKEY_LOCAL_MACHINESOFTWAREMicrosoftSMSSetupCULevel

CULevel reports 5 after CU5 has been applied.

Before updating CULevel reported 4 because Cumulative Update 4 was installed.

This update is also visible under Installed Updates in Control Panel.

The client will report 5.00.7958.1604 after it has been updated.

With these components updated:

Before updating the client reported 5.00.7958.1501 for 2012 R2 CU4 client

CU5 includes an update for SCEP.

Which means that scepinstall.exe file in the ConfigMgr install folder “.Program FilesConfiguration ManagerClient” will be updated to version 4.7.0209.0

Before updating the version was 4.6.0305.0 which is the version from 2012 R2 CU4 (October 2014 update)

And finally as reported by the client after update 4.7.209.0.

The SCEP update is a revised version of the February 2015 SCEP update

https://support.microsoft.com/en-gb/kb/3041687