CVE-2001-0480: Undefined Security Weakness

Directory traversal vulnerability in Alex's FTP Server 0.7 allows remote attackers to read arbitrary files via a ... modified dot dot in the 1 GET or 2 CD commands...

CVE-2001-0452: Undefined Security Weakness

BRS WebWeaver FTP server before 0.64 Beta allows remote attackers to obtain the real pathname of the server via a "CD " command followed by an ls command...

CVE-2001-0054: Improper Limitation of a Pathname to a Restricted Directory

Directory traversal vulnerability in FTP Serv-U before 2.5i allows remote attackers to escape the FTP root and read arbitrary files by appending a string such as "/..%20." to a CD command, a variant of a .. dot dot attack...