search menu icon-carat-right cmu-wordmark

CERT Coordination Center

InvokeRegWizard (regwizc.dll) ActiveX control has a buffer overflow

Vulnerability Note VU#37556

Original Release Date: 2002-10-01 | Last Revised: 2002-10-01


Microsoft Internet Explorer 4.01 and 5 ship with a series of activex controls to aid in its functionality. Regwiz.dll is an safe-for-scripting activex control that contains a remotely exploitable buffer overflow.


InvokeRegWizard (regwizc.dll) is a control that ships with Microsoft Internet Explorer 4.01 and 5. Regwiz.dll is a safe-for-scripting activex control that contains a remotely exploitable buffer overflow. The CLSID for this control is {50E5E3D1-C07E-11D0-B9FD-00A0249F6B00}.


A remote attacker may be able to execute arbitrary commands on the system when the victim views a malicious web page.


Apply the patch from Microsoft Security Bulletin MS99-37.

Vendor Information

Expand all

Microsoft Corporation

Updated:  September 30, 2002



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 Microsoft Security Bulletin MS99-37.

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



Microsoft acknowledges Georgi Guninski, Shane Hird of Australia and Richard Smith of Phar Lap Software ( ) for reporting this vulnerability.

This document was written by Shawn V Hernan and Jason Rafail.

Other Information

CVE IDs: None
Severity Metric: 9.11
Date Public: 1999-09-10
Date First Published: 2002-10-01
Date Last Updated: 2002-10-01 15:06 UTC
Document Revision: 10

Sponsored by the Department of Homeland Security Office of Cybersecurity and Communications.