Unspecified vulnerability in Microsoft Excel 2000 SP3 through 2007, Viewer 2003, Compatibility Pack, and Office for Mac 2004 allows user-assisted remote attackers to execute arbitrary code via malformed formulas, aka "Excel Formula Parsing Vulnerability."
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A5512
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2008/ms08-014
http://www.vupen.com/english/advisories/2008/0846/references
http://www.us-cert.gov/cas/techalerts/TA08-071A.html
http://www.securitytracker.com/id?1019585