HTTP server for Cisco IOS 11.3 to 12.2 allows attackers to bypass authentication and execute arbitrary commands, when local authorization is being used, by specifying a high access level in the URL.
https://exchange.xforce.ibmcloud.com/vulnerabilities/6749
http://www.securityfocus.com/archive/1/4.3.2.7.2.20010629095801.0c3e6a70%40brussels.cisco.com
http://www.securityfocus.com/archive/1/20010703011650.60515.qmail%40web14910.mail.yahoo.com
http://www.securityfocus.com/archive/1/1601227034.20010702112207%40olympos.org