CVE-2000-0380
The IOS HTTP service in Cisco routers and switches running IOS 11.1 through 12.1 allows remote attackers to cause a denial of service by requesting a URL that contains a %% string.
Date published : 2000-07-12
http://www.securityfocus.com/bid/1154
http://archives.neohapsis.com/archives/bugtraq/2000-04/0261.html
