Buffer overflow in ircII 4.4 IRC client allows remote attackers to execute commands via the DCC chat capability.
https://euvd.enisa.europa.eu/vulnerability/EUVD-2000-0182
http://www.securityfocus.com/bid/1046
http://www.redhat.com/support/errata/RHSA-2000-008.html
http://archives.neohapsis.com/archives/bugtraq/2000-03/0093.html