Internet Explorer 5.0 and 5.5, and Outlook Express 5.0 and 5.5, allow remote attackers to execute scripts when Active Scripting is disabled by including the scripts in XML stylesheets (XSL) that are referenced using an IFRAME tag, possibly due to a vulnerability in Windows Scripting Host (WSH).
https://exchange.xforce.ibmcloud.com/vulnerabilities/6448
https://euvd.enisa.europa.eu/vulnerability/EUVD-2001-1306
http://www.securityfocus.com/bid/2633
http://www.securityfocus.com/archive/1/3AE02004.57FDF958%40guninski.com