CVE-2001-0643: Microsoft Internet Explorer

Medium severity, CVSS 5.0. EPSS: 11.4% chance of exploitation in the next 30 days.

Internet Explorer 5.5 does not display the Class ID (CLSID) when it is at the end of the file name, which could allow attackers to trick the user into executing dangerous programs by making it appear that the document is of a safe file type.

Affected products

• Microsoft Internet Explorer: version 5.5 only

Published 2001-09-20. Last modified 2026-06-16.