Support for SQL Server versions for System Center Configuration Manager (current branch)
SQL Server 2008 R2 SP3 No minimum cumulative update
Central administration site, Primary site, Secondary site
SQL Server 2012 SP2 No minimum cumulative update
Central administration site, Primary site, Secondary site
Central administration site, Primary site, Secondary site
SQL Server 2014 SP1 No minimum cumulative update
Central administration site, Primary site, Secondary site
SQL Server 2012 Express SP2 No minimum cumulative update
Secondary site
SQL Server 2014 Express SP1 No minimum cumulative update
Secondary site
Secondary site
Reference:
https://technet.microsoft.com/sv-se/library/mt589592.aspx