NexTor IP Changer is a command-line tool that leverages the Tor network to periodically rotate a user's IP address. Versions prior to 2.0.0 have a command execution vulnerability due to unsafe use of "shell=True" with commands that rely on executable resolution through the "PATH" environment variable. An attacker controlling the execution environment can place malicious executables such as sudo earlier in the "PATH", resulting in execution of attacker-controlled code. Version 2.0.0 fixes the issue.