A flaw was found in FRRouting. The Open Shortest Path First version 3 (OSPFv3) implementation does not validate that incoming network packets originate from and are destined for expected local network addresses. A remote attacker can exploit this flaw by sending specially crafted packets from a distant network to establish unauthorized routing adjacencies. Successful exploitation may allow the attacker to manipulate network routing or cause a Denial of Service (DoS) by exhausting system resources.