Microsoft Internet Explorer Self Executing HTML Arbitrary Code Execution Vulnerability



Date Discovered

November 5, 2003


Microsoft Internet Explorer has been reported prone to an arbitrary code execution vulnerability. The issue presents itself when Internet Explorer is rendering malicious HTML pages that contain embedded executables that are invoked in a specific manner. When a malicious page is rendered the embedded code is executed with the privileges of the user running the vulnerable web browser.

Technologies Affected

  • Microsoft Internet Explorer 5.5
  • Microsoft Internet Explorer 5.5 SP1
  • Microsoft Internet Explorer 5.5 SP2
  • Microsoft Internet Explorer 6.0
  • Microsoft Internet Explorer 6.0 SP1


Run all software as a nonprivileged user with minimal access rights.
Running Internet Explorer with least privileges possible may help mitigate the impact of successful exploitation of this vulnerability.

Set web browser security to disable the execution of script code or active content.
Disabling script code or active content functionality in Internet Explorer may help prevent potential attacks.

Currently we are not aware of any vendor-supplied patches for this issue. If you feel we are in error or are aware of more recent information, please mail us at: <>.


Discovery of this vulnerability has been credited to http-equiv.

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