Unspecified vulnerability in a cryptographic feature in MailEnable Standard Edition before 1.93, Professional Edition before 1.73, and Enterprise Edition before 1.21 leads to "weakened authentication security" with unknown impact and attack vectors. NOTE: due to lack of details, it is not clear whether this is the same as CVE-2006-1792.

The SMTP service of MailEnable Standard 1.92 and earlier, Professional 2.0 and earlier, and Enterprise 2.0 and earlier before the MESMTPC hotfix, allows remote attackers to cause a denial of service (application crash) via a HELO command with a null byte in the argument, possibly triggering a length inconsistency or a missing argument.

Unspecified vulnerability in the POP service in MailEnable Standard Edition before 1.94, Professional Edition before 1.74, and Enterprise Edition before 1.22 has unknown attack vectors and impact related to "authentication exploits". NOTE: this is a different set of affected versions, and probably a different vulnerability than CVE-2006-1337.

Webmail in MailEnable Professional Edition before 1.73 and Enterprise Edition before 1.21 allows remote attackers to cause a denial of service (CPU consumption) via unspecified vectors involving "incorrectly encoded quoted-printable emails".

Unspecified vulnerability in MailEnable Enterprise Edition before 1.2 allows remote attackers to cause a denial of service (CPU utilization) by viewing "formatted quoted-printable emails" via webmail.

Multiple unspecified vulnerabilities in MailEnable Professional 1.6 and earlier and Enterprise 1.1 and earlier allow attackers to cause a denial of service (crash) via invalid IMAP commands.

Unknown vulnerability in SMTP authentication for MailEnable allows remote attackers to cause a denial of service (crash).

Buffer overflow in the IMAP service for MailEnable Enterprise 1.04 and earlier and Professional 1.54 allows remote attackers to execute arbitrary code via a long AUTHENTICATE command.

The SMTP service in MailEnable Enterprise 1.04 and earlier and Professional 1.54 and earlier allows remote attackers to cause a denial of service (server crash) via an EHLO command with a Unicode string.

MailEnable Professional Edition before 1.53 and Enterprise Edition before 1.02 allows remote attackers to cause a denial of service (crash) via malformed (1) SMTP or (2) IMAP commands.