This Metasploit module exploits a vulnerability in the Cisco IOS HTTP Server. By sending a GET request for "/level/num/exec/..", where num is between 16 and 99, it is possible to bypass authentication and obtain full system control. IOS 11.3 -> 12.2 are reportedly vulnerable. This Metasploit module tested successfully against a Cisco 1600 Router IOS v11.3(11d).
f47c8e7887760a5e15e7ecfe81baff6ced2ddb34267bcb19aff00e68bad4084e