Vulnerability Note VU#434641

Microsoft Internet Explorer may automatically execute HTA files

Original Release date: 11 Apr 2006 | Last revised: 12 Apr 2006


Microsoft Internet Explorer (IE) fails to properly handle HTA files. This vulnerability may allow a remote attacker to execute arbitrary code.


HTML Application (HTA)

HTML Applications (HTAs) are HTML documents that are executed as trusted applications. HTAs can run script, Java, or ActiveX controls.

The Problem

An error in the way that IE handles HTAs may allow a remote attacker to bypass IE's Security checks and execute an HTA application without a user's consent.


More information is available in Microsoft Security Bulletin MS06-013.


If a remote attacker can persuade a user to access a specially crafted HTML page, that attacker may be able to execute arbitrary code with the privileges of the compromised user.


Apply an Update
This issue is addressed in Microsoft Security Bulletin MS06-013.

Refer to Microsoft Security Bulletin MS06-013 for workarounds for this vulnerability.

Systems Affected (Learn More)

VendorStatusDate NotifiedDate Updated
Microsoft CorporationAffected-11 Apr 2006
If you are a vendor and your product is affected, let us know.

CVSS Metrics (Learn More)

Group Score Vector
Base N/A N/A
Temporal N/A N/A
Environmental N/A N/A



This vulnerability was reported by Jeffrey van der Stad.

This document was written by Jeff Gennari

Other Information

  • CVE IDs: CVE-2006-1388
  • Date Public: 27 Mar 2006
  • Date First Published: 11 Apr 2006
  • Date Last Updated: 12 Apr 2006
  • Severity Metric: 25.50
  • Document Revision: 12


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