CVE-2006-3277

Mailenable Enterprise vulnerability

CVSS

5.0

EPSS

6.0%

EPSS pct

93th

Exploited

No known

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.

Affected vendor

Mailenable

Affected product

Mailenable Enterprise

CVSS vector

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

Weakness type (CWE)

CWE-399

Published

2006-06-28

Risk analysis

Based on its CVSS vector, this vulnerability is exploitable over the network, low attack complexity, requiring no authentication. Successful exploitation leads to partial impact to availability.

Its EPSS score of 6.0% reflects a lower probability of exploitation activity in the wild over the next 30 days, placing it above 93% of all scored CVEs.

Check your external exposure to CVE-2006-3277

Confirm whether Mailenable Mailenable Enterprise is running on any internet-facing host or subdomain.
Match discovered service fingerprints against the version affected by CVE-2006-3277.
Prioritise remediation if the asset is public, business-critical, or near authentication/payment flows.

How ThreatPort helps with CVE-2006-3277

ThreatPort's external attack surface scanner checks your internet-facing assets — agentlessly, from the outside in — for the exposed services and versions that CVE-2006-3277 affects, then prioritises the finding by real risk using CISA KEV and FIRST.org EPSS.

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