Heap overflow in the KTH Kerberos 4 FTP client 4-1.1.1 allows remote malicious servers to execute arbitrary code on the client via a long response to a passive (PASV) mode request.

Buffer overflow in lukemftp FTP client in SuSE 6.4 through 8.0, and possibly other operating systems, allows a malicious FTP server to execute arbitrary code via a long PASV command.

Multiple signal handler race conditions in lukemftpd (aka tnftpd before 20040810) allow remote authenticated attackers to cause a denial of service or execute arbitrary code.