Buffer overflow in the FTP server of Hummingbird Connectivity 7.1 and 9.0 allows remote, authenticated users to cause a denial of service (application crash) via a long argument to the XCWD command.
https://exchange.xforce.ibmcloud.com/vulnerabilities/17855
http://www.uniras.gov.uk/vuls/2004/841713/index.htm
http://www.securityfocus.com/bid/11542