CVE-2000-1022 – Cisco PIX Firewall 4.x/5.x - SMTP Content Filtering Evasion

https://notcve.org/view.php?id=CVE-2000-1022

11 Dec 2000 — The mailguard feature in Cisco Secure PIX Firewall 5.2(2) and earlier does not properly restrict access to SMTP commands, which allows remote attackers to execute restricted commands by sending a DATA command before sending the restricted commands. • https://www.exploit-db.com/exploits/20231 •