KLA10456
SB vulnerability in MS Office

An use-after-free vulnerability was found in Microsoft Office. By exploiting this vulnerability malicious users can bypass ASLR protection. This vulnerability can be exploited remotely via a specially designed document.

Microsoft Office 2007 Service Pack 3 
Microsoft Office 2010 Service Pack 2
Microsoft Office 2013
Microsoft Office 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)