Untrusted search path vulnerability in ALFTP before 5.31 allows local users to gain privileges via a Trojan horse executable file in a directory that is accessed for reading an extensionless file, as demonstrated by executing the README.exe file when a user attempts to access the README file.

Directory traversal vulnerability in the FTP client in ALTools ESTsoft ALFTP 4.1 beta 2 and 5.0 allows remote FTP servers to create or overwrite arbitrary files via a .. (dot dot) in a response to a LIST command, a related issue to CVE-2002-1345. NOTE: this can be leveraged for code execution by writing to a Startup folder.