Directory traversal vulnerability in FTPGetter Team FTPGetter 3.51.0.05, and probably earlier versions, allows remote FTP servers to write arbitrary files via a "..\" (dot dot backslash) in a filename.
The product uses external input to construct a pathname that is intended to identify a file or directory that is located underneath a restricted parent directory, but the product does not properly neutralize special elements within the pathname that can cause the pathname to resolve to a location that is outside of the restricted directory.