CVE-2009-3943: Microsoft Internet Explorer

Medium severity, CVSS 5.0. EPSS: 13% chance of exploitation in the next 30 days.

Microsoft Internet Explorer 6 through 6.0.2900.2180 and 7 through 7.0.6000.16711 allows remote attackers to cause a denial of service (application hang) via a JavaScript loop that configures the home page by using the setHomePage method and a DHTML behavior property.

Affected products

• Microsoft Internet Explorer: from 6, up to and including 6.0.2900.2180; from 7.0, up to and including 7.0.6000.16711

Published 2009-11-16. Last modified 2026-06-16.