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.
Improper Input Validation The product receives input or data, but it does
not validate or incorrectly validates that the input has the
properties that are required to process the data safely and
correctly.