OpenBSD OpenSMTPd is an SMTP server software based on RFC 5321, developed by the OpenBSD organization. A code vulnerability exists in OpenBSD OpenSMTPd. Remote attackers can exploit this vulnerability via a specially crafted SMTP session to execute arbitrary commands with root privileges.This rule supports to defend the A6: Vulnerable and Outdated Components of OWASP Top 10 - 2021. Other reference:None