CVE-2006-0788
Kyocera 3830 (aka FS-3830N) printers have a back door that allows remote attackers to read and alter configuration settings via strings that begin with "!R!SIOP0", as demonstrated using (1) a connection to to TCP port 9100 or (2) the UNIX lp command.
Date published : 2006-02-19
http://www.securityfocus.com/bid/16685
http://archives.neohapsis.com/archives/fulldisclosure/2006-02/0344.html