IPswitch WS_FTP allows local users to gain additional privileges and modify or add mail accounts by setting the "flags" registry key to 1920.

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.

Buffer overflow in the login functions in IMAP server (imapd) in Ipswitch IMail 5.0 and earlier allows remote attackers to cause a denial of service and possibly execute arbitrary code via (1) a long user name or (2) a long password.

IMail POP3 daemon uses weak encryption, which allows local users to read files.

Stack based buffer overflow in Ipswitch IMail server up to and including 12.5.5 allows remote attackers to execute arbitrary code via unspecified vectors in IMmailSrv, aka ETBL or ETCETERABLUE.

Stack based buffer overflow in Ipswitch IMail server up to and including 12.5.5 allows remote attackers to execute arbitrary code via unspecified vectors in IMmailSrv, aka ETRE or ETCTERARED.

Multiple cross-site scripting (XSS) vulnerabilities in the web client interface in Ipswitch IMail Server 12.3 and 12.4, possibly before 12.4.1.15, allow remote attackers to inject arbitrary web script or HTML via (1) the Name field in an add new contact action in the Contacts section or unspecified vectors in (2) an Add Group task in the Contacts section, (3) an add new event action in the Calendar section, or (4) the Task section.

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.