CactusVPN through 6.0 for macOS suffers from a root privilege escalation vulnerability in its privileged helper tool. The privileged helper tool implements an XPC interface, which allows arbitrary applications to execute system commands as root.

CactusVPN 5.3.6 for macOS contains a root privilege escalation vulnerability through a setuid root binary called runme. The binary takes a single command line argument and passes this argument to a system() call, thus allowing low privileged users to execute commands as root.