This indicates an attack attempt to exploit a Code Execution vulnerability in Microsoft Internet Explorer.
The vulnerability is due to insufficient sanitizing of user supplied inputs in the application. An attacker can exploit this by tricking an unsuspecting user into visiting a malicious webpage and execute arbitrary script code within the context of the application.
Microsoft Internet Explorer 5.5
Microsoft Internet Explorer 6.0
System Compromise: Remote attackers can execute arbitrary script code within the context of the target user's browser.
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