This indicates an attack attempt to exploit a Buffer Overflow vulnerability in Microsoft Office.
The vulnerability is caused by an error in the application while handling crafted WordPerfect documents. A remote attacker may be able to exploit this to execute arbitrary code within the context of the application, via a crafted WordPerfect file.
Microsoft Office 2016
Microsoft Office 2013 RT
Microsoft Office 2013
Microsoft Office 2010
Microsoft Office 2007
System Compromise: Remote attackers can execute arbitrary code in the context of the affected application.
Apply the most recent upgrade or patch from the vendor.