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Vulnerability record · CVE-2006-3277 · published 28 June 2006

CVE-2006-3277: Mailenable enterprise vulnerability

Mailenable · Mailenable Enterprise

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.

5.0 CVSS 2.0 Medium EPSS 6.1% · top 6.8% CWE-399 · CWE-399
5.0CVSS 2.0 base score
6.1%EPSS exploitation probability, 30 days
NoNot in CISA KEV
2Affected product versions listed by NVD
20References
16 Jun 2026Last modified by NVD

Description

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.

AV:N/AC:L/Au:N/C:N/I:N/A:P

Affected products

2 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://secunia.com/advisories/20790 Vendor Advisory
http://securitytracker.com/id?1016376
http://www.divisionbyzero.be/?p=173 Patch
http://www.divisionbyzero.be/?p=174
http://www.mailenable.com/hotfix/mesmtpc.zip Patch
http://www.osvdb.org/26791
http://www.securityfocus.com/archive/1/438374/100/0/threaded
http://www.securityfocus.com/bid/18630
http://www.vupen.com/english/advisories/2006/2520 Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/27387
http://secunia.com/advisories/20790 Vendor Advisory
http://securitytracker.com/id?1016376
http://www.divisionbyzero.be/?p=173 Patch
http://www.divisionbyzero.be/?p=174
http://www.mailenable.com/hotfix/mesmtpc.zip Patch
http://www.osvdb.org/26791
http://www.securityfocus.com/archive/1/438374/100/0/threaded
http://www.securityfocus.com/bid/18630
http://www.vupen.com/english/advisories/2006/2520 Vendor Advisory
https://exchange.xforce.ibmcloud.com/vulnerabilities/27387

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

10.0CVE-2006-6997Mailenable enterprise improper authentication vulnerabilityUnspecified vulnerability in a cryptographic feature in MailEnable Standard Edition before 1.93, Professional Edition before 1.73, and Enterprise Edi…EPSS 1.8%10.0CVE-2006-6605Mailenable enterprise vulnerabilityStack-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,…EPSS 5.9%10.0CVE-2006-6423MailEnable IMAP Service Pre-Auth Stack Buffer OverflowMailEnable Professional and Enterprise IMAP service contains a stack-based buffer overflow reachable before authentication. A remote attacker can sen…EPSS 71%analysed10.0CVE-2006-1792Mailenable enterprise vulnerabilityUnspecified vulnerability in the POP service in MailEnable Standard Edition before 1.94, Professional Edition before 1.74, and Enterprise Edition bef…EPSS 1.8%10.0CVE-2005-2222Mailenable professional vulnerabilityUnknown vulnerability in the HTTPMail service in MailEnable Professional before 1.6 has unknown impact and attack vectors.EPSS 1.4%9.3CVE-2006-5176Mailenable enterprise memory buffer overflow vulnerabilityBuffer overflow in NTLM authentication in MailEnable Professional 2.0 and Enterprise 2.0 allows remote attackers to execute arbitrary code via "the s…EPSS 5.4%9.3CVE-2006-5177Mailenable enterprise memory buffer overflow vulnerabilityThe NTLM authentication in MailEnable Professional 2.0 and Enterprise 2.0 allows remote attackers to (1) execute arbitrary code via unspecified vecto…EPSS 7.1%9.0CVE-2008-1276Mailenable enterprise memory buffer overflow vulnerabilityMultiple buffer overflows in the IMAP service (MEIMAPS.EXE) in MailEnable Professional Edition and Enterprise Edition 3.13 and earlier allow remote a…EPSS 7.1%

Source: NIST National Vulnerability Database (record CVE-2006-3277), CISA KEV, FIRST EPSS (scores of 2026-09-27). This page is refreshed as NVD updates the record.