This update resolves vulnerabilities in Microsoft SQL Server that could allow remote code execution if an authenticated attacker runs a specially crafted query that is designed to execute a virtual function from a wrong address. This leads to a function call to uninitialized memory. To learn more about this vulnerability, see Microsoft Security Bulletin MS15-058.
- The installation of a cumulative update that is an earlier version than the GDR branch version of this security update may succeed and partly overwrite the GDR branch security update. In this case, the security protection of the GDR branch security update is not compromised.
How to obtain and install the update
Method 1: Microsoft Update
This update is available through Microsoft Update. When you turn on automatic updating, this update will be downloaded and installed automatically. For more information about how to turn on automatic updating, see Get security updates automatically.
Method 2: Microsoft Download Center
You can obtain the stand-alone update package through the Microsoft Download Center. To install the update, follow the installation instructions on the download page