The issue arises from an incorrect permission assignment during the installation script, allowing a local unprivileged attacker to execute arbitrary code as root. This occurs because the installation instructs setting the system environment file `/etc/environment` with world writable permissions (0777), enabling any local unprivileged user to write to `/etc/environment` and force all users, including root, to execute arbitrary code during the next login or reboot. Additionally, the entire home directory of the `twcloud` user at `/home/twcloud` is given world writable permissions, allowing any local unprivileged attacker to execute arbitrary code as `twcloud`.