Internet Explorer 5.01 through 6.0 does not properly handle object tags returned from a Web server during XML data binding, which allows remote attackers to execute arbitrary code via an HTML e-mail message or web page.
https://oval.cisecurity.org/repository/search/definition/oval%3Aorg.mitre.oval%3Adef%3A123
https://exchange.xforce.ibmcloud.com/vulnerabilities/13300
https://docs.microsoft.com/en-us/security-updates/securitybulletins/2003/ms03-040