Microsoft Office Word 2002 SP3, 2003 SP3, and 2007 SP2; Microsoft Office 2004 and 2008 for Mac; Open XML File Format Converter for Mac; Office Word Viewer; Office Compatibility Pack for Word, Excel, and PowerPoint 2007 File Formats SP2; and Works 9 do not properly handle malformed records in a Word file, which allows remote attackers to execute arbitrary code or cause a denial of service (memory corruption) via a crafted file, aka "Word Record Parsing Vulnerability."
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A11490
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2010/ms10-056