KLA10582
Code execution vulnerability in Microsoft Sharepoint Server

An unspecified vulnerability was found in Microsoft SharePoint Server. By exploiting this vulnerability malicious users can execute arbitrary code. This vulnerability can be exploited remotely via a specially designed page content.

SharePoint Server 2007 x86, x64 Service Pack 3
SharePoint Foundation 2010 Service Pack 2
SharePoint Server 2010 Service Pack 2
SharePoint Foundation 2013 Service Pack 1

Install necessary updates from the KB section, that are listed in your Windows Update (Windows Update usually can be accessed from the Control Panel)