Goodtech Systems : Security Vulnerabilities, CVEs,

Buffer overflow in the administration web server for GoodTech Telnet Server 4.0 and 5.0, and possibly all versions before 5.0.7, allows remote attackers to execute arbitrary code via a long string to port 2380.

Multiple stack-based buffer overflows in GoodTech SMTP server 5.16 allow remote attackers to execute arbitrary code via (1) a RCPT TO command with a long DNS name, or (2) a large number of RCPT TO commands with a long e-mail name arugment in the last command.

GoodTech SMTP Server 5.14 allows remote attackers to cause a denial of service (application crash) via a RCPT TO command with an invalid argument, as demonstrated using an "A" character.