Directory traversal vulnerability in Serv-U FTP Server before 11.1.0.5 allows remote authenticated users to read and write arbitrary files, and list and create arbitrary directories, via a "..:/" (dot dot colon forward slash) in the (1) list, (2) put, or (3) get commands.

Directory traversal vulnerability in Serv-U before 9.2.0.1 allows remote authenticated users to read arbitrary files via unspecified vectors.

Serv-U FTP Server before 6.1.0.4 allows attackers to cause a denial of service (crash) via (1) malformed packets and possibly other unspecified issues with unknown impact and attack vectors including (2) use of "~" in a pathname, and (3) memory consumption of the daemon. NOTE: it is not clear whether items (2) and above are vulnerabilities.

Serv-U FTP server 4.x and 5.x allows remote attackers to cause a denial of service (application crash) via a STORE UNIQUE (STOU) command with an MS-DOS device name argument such as (1) COM1, (2) LPT1, (3) PRN, or (4) AUX.