systemd could allow a local authenticated attacker to gain elevated privileges on the system, caused by the mishandling of numerical usernames. By sending a specially-crafted request, an attacker could exploit this vulnerability to gain elevated privileges as root.

An exploitable denial-of-service vulnerability exists in Systemd 245. A specially crafted DHCP FORCERENEW packet can cause a server running the DHCP client to be vulnerable to a DHCP ACK spoofing attack. An attacker can forge a pair of FORCERENEW and DCHP ACK packets to reconfigure the server.