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Microsoft Internet Explorer may automatically execute HTA files

Vulnerability Note VU#434641

Original Release Date: 2006-04-11 | Last Revised: 2006-04-12


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.

Vendor Information

Affected   Unknown   Unaffected

Microsoft Corporation

Updated:  April 11, 2006



Vendor Statement

No statement is currently available from the vendor regarding this vulnerability.

Vendor Information

The vendor has not provided us with any further information regarding this vulnerability.


Please see

If you have feedback, comments, or additional information about this vulnerability, please send us email.

CVSS Metrics

Group Score Vector
Base N/A N/A
Temporal N/A N/A
Environmental 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
Severity Metric: 25.50
Date Public: 2006-03-27
Date First Published: 2006-04-11
Date Last Updated: 2006-04-12 11:48 UTC
Document Revision: 12

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