The default configuration of ColdFusion MX has the "Enable Robust Exception Information" option selected, which allows remote attackers to obtain the full path of the web server via a direct request to CFIDE/probe.cfm, which leaks the path in an error message.
https://exchange.xforce.ibmcloud.com/vulnerabilities/11879
https://euvd.enisa.europa.eu/vulnerability/EUVD-2003-1459
http://www.securityfocus.com/bid/7443
http://www.securityfocus.com/archive/1/319867