TYPSoft FTP Server 1.10 allows remote authenticated users to cause a denial of service (crash) by sending an APPE (append) command immediately followed by a DELE (delete) command without sending file data in between these two commands.

TYPSoft FTP Server 1.10 allows remote authenticated users to cause a denial of service (CPU consumption) via "//../" arguments to (1) mkd, (2) xmkd, (3) dele, (4) size, (5) retr, (6) stor, (7) appe, (8) rnfr, (9) rnto, (10) rmd, or (11) xrmd, as demonstrated using "//../qwerty".