Vendor
2 published CVES affecting 3dftp, from public sources (CVE.org, NVD, CISA KEV, FIRST EPSS, OSV).
Newest publication first
Directory traversal vulnerability in SiteDesigner Technologies, Inc. 3D-FTP Client 9.0 build 2, and probably earlier versions, allows remote FTP servers to write arbitrary files via a ".." (dot dot backslash) in a filename.
Multiple directory traversal vulnerabilities in the FTP client in 3D-FTP Client 8.01 (8.0 build 1) allow remote FTP servers to create or overwrite arbitrary files via a .. (dot dot) in a response to a (1) LIST or (2) MLSD command.
Sources: CVE.org, NVD, CISA KEV, FIRST EPSS, OSV and public exploit-reference metadata. Product matching comes from the published CVE records. A proof-of-concept means public code exists; it is not evidence of exploitation.