The fix also applies to Microsoft SQL Server 2014 Analysis Services (SSAS 2014).
When you run a Multidimensional Expressions (MDX) query that contains a DRILLTHROUGH statement in Microsoft SQL Server 2008 Analysis Services (SSAS 2008), SQL Server 2008 R2 Analysis Services (SSAS 2008 R2), SQL Server 2012 Analysis Services (SSAS 2012), or SQL Server 2014 Analysis Services (SSAS 2014), the result may be incorrect. Specifically, the returned amount is multiplied incorrectly by the number of rows that is returned by the DRILLTHROUGH statement.
The issue was first fixed in the following cumulative update of SQL Server.
Each new cumulative update for SQL Server contains all the hotfixes and all the security fixes that were included with the previous cumulative update. Check out the latest cumulative updates for SQL Server: