In systemd 259 before 260, there is local privilege escalation in systemd-machined because varlink can be used to reach the root namespace.

In udev in systemd before 260, local root execution can occur via malicious hardware devices and unsanitized kernel output.

In nspawn in systemd 233 through 259 before 260, an escape-to-host action can occur via a crafted optional config file.

In systemd 259, systemd-journald can send ANSI escape sequences to the terminals of arbitrary users when a "logger -p emerg" command is executed, if ForwardToWall=yes is set.