To apply this cumulative update package, you must be running SQL Server 2014 RTM. So it is pertinent for versions 12.0.2000 - 12.0.2456.
The build number of the cumulative update package is 12.0.2480.0. You may have to restart the computer after you apply this cumulative update package. The cumulative update package updates only those components currently installed.
This update contains 54 updates. Most notably, not least because it was discovered and raised by a colleague is this issue with CCI;
3030619 FIX: Incorrect data returned when you use DATE data type as a qualifier in a query in SQL Server 2014