TYPSoft FTP Server 1.11 allows remote attackers to cause a denial of service (CPU consumption) by sending an ABOR (abort) command without an active file transfer.
Typsoft FTP Server 1.11, with "Sub Directory Include" enabled, allows remote attackers to cause a denial of service (crash) by sending multiple RETR commands. NOTE: it was later reported that 1.10 is also affected.