Unspecified vulnerability in Microsoft Excel 2000, XP, 2003, and 2004 for Mac, and possibly other Office products, allows remote user-assisted attackers to execute arbitrary code via unknown attack vectors, as demonstrated by Exploit-MSExcel.h in targeted zero-day attacks.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A301
https://exchange.xforce.ibmcloud.com/vulnerabilities/32178
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2007/ms07-015
http://www.vupen.com/english/advisories/2007/0463
http://www.us-cert.gov/cas/techalerts/TA07-044A.html
http://www.securityfocus.com/bid/22383
http://www.microsoft.com/technet/security/advisory/932553.mspx
http://www.kb.cert.org/vuls/id/613740
http://www.avertlabs.com/research/blog/?p=191
http://vil.nai.com/vil/content/v_141393.htm
http://securitytracker.com/id?1017584