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.

ftpd in NetBSD 1.5 through 1.5.3 and 1.6 does not properly quote a digit in response to a STAT command for a filename that contains a carriage return followed by a digit, which can cause firewalls and other intermediary devices to lose proper track of the FTP session.

One-byte buffer overflow in replydirname function in BSD-based ftpd allows remote attackers to gain root privileges.