The STARTTLS implementation in the server in Ipswitch IMail 11.03 and earlier does not properly restrict I/O buffering, which allows man-in-the-middle attackers to insert commands into encrypted SMTP sessions by sending a cleartext command that is processed after TLS is in place, related to a "plaintext command injection" attack, a similar issue to CVE-2011-0411.

Multiple buffer overflows in Ipswitch IMail before 2006.21 allow remote attackers or authenticated users to execute arbitrary code via (1) the authentication feature in IMailsec.dll, which triggers heap corruption in the IMail Server, or (2) a long SUBSCRIBE IMAP command, which triggers a stack-based buffer overflow in the IMAP Daemon.

Stack-based buffer overflow in the IMAP server for Ipswitch IMail 8.12 and 8.13, and other versions before IMail Server 8.2 Hotfix 2, allows remote authenticated users to cause a denial of service (crash) via a SELECT command with a large argument.

Multiple features in Ipswitch IMail Server before 8.13 allow remote attackers to cause a denial of service (crash) via (1) a long sender field to the Queue Manager or (2) a long To field to the Web Messaging component.

Unknown vulnerability in the Web calendaring component of Ipswitch IMail Server before 8.13 allows remote attackers to cause a denial of service (crash) via "specific content."

Buffer overflow in the LDAP component of Ipswitch IMail 7.1 and earlier allows remote attackers to execute arbitrary code via a long "bind DN" parameter.

Buffer overflow in IPSwitch IMail SMTP server 6.06 and possibly prior versions allows remote attackers to execute arbitrary code via a long From: header.

The web server in IPSWITCH IMail 6.04 and earlier allows remote attackers to read and delete arbitrary files via a .. (dot dot) attack.

Ipswitch IMAIL server 6.02 and earlier allows remote attackers to cause a denial of service via the AUTH CRAM-MD5 command.

IMail IMONITOR status.cgi CGI script allows remote attackers to cause a denial of service with many calls to status.cgi.

Ipswitch IMail 5.0 and 6.0 uses weak encryption to store passwords in registry keys, which allows local attackers to read passwords for e-mail accounts.

Buffer overflow in Ipswitch IMail Service 5.0 allows an attacker to cause a denial of service (crash) and possibly execute arbitrary commands via a long URL.