Microsoft Excel 2000 SP3, 2002 SP3, 2003 SP2, 2004 for Mac, and v.X for Mac allows remote attackers to execute arbitrary code via malformed IMDATA records that trigger memory corruption.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A119
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2007/ms07-002
http://www.vupen.com/english/advisories/2007/0103
http://www.us-cert.gov/cas/techalerts/TA07-009A.html
http://www.securityfocus.com/bid/21856
http://www.securityfocus.com/archive/1/457274/100/0/threaded