The MHTML protocol handler in Microsoft Outlook Express 6 and Windows Mail in Windows Vista does not properly handle Content-Disposition "notifications," which allows remote attackers to obtain sensitive information from other Internet Explorer domains, aka "Content Disposition Parsing Cross Domain Information Disclosure Vulnerability."
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A2085
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2007/ms07-034
http://www.vupen.com/english/advisories/2007/2154
http://www.us-cert.gov/cas/techalerts/TA07-163A.html
http://www.securitytracker.com/id?1018234
http://www.securitytracker.com/id?1018233
http://www.securityfocus.com/bid/24410
http://www.securityfocus.com/archive/1/472002/100/0/threaded
http://www.securityfocus.com/archive/1/471947/100/0/threaded
http://secunia.com/advisories/25639