Microsoft : Security Vulnerabilities, CVEs, Published In October 2005 (XSS)

The HTML rendering engine in Microsoft Internet Explorer 6.0 allows remote attackers to conduct cross-site scripting (XSS) attacks via HTML in corrupted images and other files such as .GIF, JPG, and WAV, which is rendered as HTML when the user clicks on the link, even though the web server response and file extension indicate that it should be treated as a different file type.