Buffer overflow in URLMON.DLL in Microsoft Internet Explorer 5.01, 5.5 and 6.0 allows remote attackers to execute arbitrary code via an HTTP response containing long values in (1) Content-type and (2) Content-encoding fields.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A926
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2003/ms03-015
http://www.kb.cert.org/vuls/id/169753