CVE-2010-1991: Microsoft Ie

Medium severity, CVSS 5.0. EPSS: 10.5% chance of exploitation in the next 30 days.

Microsoft Internet Explorer 6.0.2900.2180, 7, and 8.0.7600.16385 executes a mail application in situations where an IFRAME element has a mailto: URL in its SRC attribute, which allows remote attackers to cause a denial of service (excessive application launches) via an HTML document with many IFRAME elements.

Affected products

• Microsoft Ie: version 8.0.7600.16385 only
• Microsoft Internet Explorer: version 6.0.2900.2180 only; version 7 only; version 7.0 only

Published 2010-05-20. Last modified 2026-06-16.