Multiple unspecified vulnerabilities in the SMTP service in MailEnable Standard Edition 1.x, Professional Edition 3.x and earlier, and Enterprise Edition 3.x and earlier allow remote attackers to cause a denial of service (crash) via crafted (1) EXPN or (2) VRFY commands.

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.

Stack-based buffer overflow in the POP service in MailEnable Standard 1.98 and earlier; Professional 1.84, and 2.35 and earlier; and Enterprise 1.41, and 2.35 and earlier before ME-10026 allows remote attackers to execute arbitrary code via a long argument to the PASS command.

SMTP service in MailEnable Standard, Professional, and Enterprise before ME-10014 (20060904) allows remote attackers to cause a denial of service via an SPF lookup for a domain with a large number of records, which triggers a null pointer exception.

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.

Unknown vulnerability in the SMTP service in MailEnable Standard before 1.9 and Professional before 1.6 allows remote attackers to cause a denial of service (crash) during authentication.

Format string vulnerability in MailEnable 1.8 allows remote attackers to cause a denial of service (application crash) via format string specifiers in the mailto field.