Buffer overflow in SMTP HELO command in Sendmail allows a remote attacker to hide activities.

Path traversal vulnerability whose exploitation could allow an authenticated remote user to bypass SecurityManager's intended restrictions and list a parent directory via any filename, such as a multiple ..%2F value affecting the 'dodoc' parameter in the /MailAdmin_dll.htm file.

Stored XSS vulnerability. This vulnerability could allow an attacker to store a malicious JavaScript payload via GET and POST methods on multiple parameters in the MailAdmin_dll.htm file.

An information exposure vulnerability has been found, the exploitation of which could allow a remote user to retrieve sensitive information stored on the server such as credential files, configuration files, application files, etc., simply by appending any of the following parameters to the end of the URL: %00 %0a, %20, %2a, %a0, %aa, %c0 and %ca.