The XMLHTTP ActiveX control in Microsoft XML Parser 2.6 and XML Core Services 3.0 through 6.0 does not properly handle HTTP server-side redirects, which allows remote user-assisted attackers to access content from other domains.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A221
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2006/ms06-061
http://www.vupen.com/english/advisories/2006/3980
http://www.securityfocus.com/bid/20339
http://www.securityfocus.com/archive/1/449179/100/0/threaded
http://www.kb.cert.org/vuls/id/547212