Microsoft SharePoint Server 2007 SP3, 2010 SP1 and SP2, and 2013; Office Web Apps 2010; Excel 2003 SP3, 2007 SP3, 2010 SP1 and SP2, 2013, and 2013 RT; Office for Mac 2011; Excel Viewer; and Office Compatibility Pack SP3 allow remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted Office document, aka "Microsoft Office Memory Corruption Vulnerability."
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18950
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A18543
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-073
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2013/ms13-067