source: https://www.securityfocus.com/bid/755/info

The Avirt Mail Server 3.3a and 3.5 packages are vulnerable to a remote buffer overflow vulnerability. The buffer overflow can be initiated by passing 856 characters in the password field.

https://gitlab.com/exploit-database/exploitdb-bin-sploits/-/raw/main/bin-sploits/19580.zip