Danzer - ActiveX Fuzzer

http://www.cert.org/vuls/discovery/dranzer.html

Here is what they say about it:

Attackers frequently take advantage of vulnerabilities in ActiveX controls to compromise systems using Microsoft Internet Explorer. A programming or design flaw in an ActiveX control can allow an attacker to execute arbitrary code by convincing a user to view a specially crafted web page. Since 2000, we have seen a significant increase in vulnerabilities in ActiveX controls.

We have developed Dranzer, a tool that enables users to examine effective techniques for fuzz testing ActiveX controls. By testing a large number of ActiveX controls, we can provide some insight into the current state of ActiveX security. When we discover new vulnerabilities, we practice responsible disclosure principles and perform the necessary remediation steps.