Microsoft Internet Explorer 5.01, 5.5 and 6.0 allows remote attackers to execute arbitrary code under fewer security restrictions via a malformed web page that requires NetBIOS connectivity, aka "Zone Spoofing through Malformed Web Page" vulnerability.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A923
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2002/ms02-023
http://www.securityfocus.com/bid/4753