Unspecified vulnerability in Microsoft Exchange allows remote attackers to execute arbitrary code via e-mail messages with crafted (1) vCal or (2) iCal Calendar properties.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A2035
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1996
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A1818
https://exchange.xforce.ibmcloud.com/vulnerabilities/25556
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2006/ms06-019
http://www.vupen.com/english/advisories/2006/1743
http://www.us-cert.gov/cas/techalerts/TA06-129A.html
http://www.securityfocus.com/bid/17908
http://www.kb.cert.org/vuls/id/303452