In FreeBSD before 11.2-STABLE(r348229) 11.2-RELEASE-p7 12.0-STABLE(r342228) and 12.0-RELEASE-p1 insufficient validation of network-provided data in bootpd may make it possible for a malicious attacker to craft a bootp packet which could cause a stack buffer overflow. It is possible that the buffer overflow could lead to a Denial of Service or remote code execution.