Cumulative update package 4 for SQL Server 2012 is available
How to obtain Cumulative Update 4 for SQL Server 2012
A supported cumulative update package is now available from Microsoft. However, it is intended to correct only the problems that are described in this article. Apply it only to systems that are experiencing these specific problems. This cumulative update package may receive additional testing. Therefore, if you are not severely affected by any of these problems, we recommend that you wait for the next SQL Server 2012 service pack that contains the hotfixes in this cumulative update package.
If the cumulative update is available for download, there is a “Hotfix download available” section at the top of this Knowledge Base article. If this section does not appear, contact Microsoft Customer Service and Support to obtain the cumulative update package.