CVE-2006-3357: Microsoft Internet Explorer

High severity, CVSS 7.5. EPSS: 35.3% chance of exploitation in the next 30 days.

Heap-based buffer overflow in HTML Help ActiveX control (hhctrl.ocx) in Microsoft Internet Explorer 6.0 allows remote attackers to cause a denial of service (application crash) and possibly execute arbitrary code by repeatedly setting the Image field of an Internet.HHCtrl.1 object to certain values, possibly related to improper escaping and long strings.

Affected products

• Microsoft Internet Explorer: version 6.0 only

Published 2006-07-06. Last modified 2026-06-16.