Stack-based buffer overflow in Microsoft Office 2003 SP3, 2007 SP3, 2010 SP1 and SP2, 2013, and 2013 RT allows remote attackers to execute arbitrary code via a crafted WordPerfect document (.wpd) file, aka "Word Stack Buffer Overwrite Vulnerability."
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A19162
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-091