How severe is CVE-2006-5177?

CVE-2006-5177 has a CVSS 2.0 base score of 9.3, rated critical severity.

Is CVE-2006-5177 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2006-5177?

CVE-2006-5177 primarily affects Mailenable Mailenable Enterprise. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2006-5177?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.

When was CVE-2006-5177 published?

CVE-2006-5177 was published on 2006-10-10 and last updated on 2026-06-16.

CVE-2006-5177

CVE-2006-5177 is a critical-severity vulnerability in Mailenable Mailenable Enterprise with a CVSS 2.0 base score of 9.3. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low. The underlying weakness is classified as CWE-119.

Key facts

Severity: Critical (CVSS 2.0 base score 9.3)
EPSS exploit prediction: 7% (93rd percentile)
Actively exploited: Not listed in CISA KEV
Weakness: CWE-119
Affected product: Mailenable Mailenable Enterprise
Published: 2006-10-10
Last modified: 2026-06-16

Description

The NTLM authentication in MailEnable Professional 2.0 and Enterprise 2.0 allows remote attackers to (1) execute arbitrary code via unspecified vectors involving crafted base64 encoded NTLM Type 3 messages, or (2) cause a denial of service via crafted base64 encoded NTLM Type 1 messages, which trigger a buffer over-read.

Frequently asked questions

What is CVE-2006-5177?: The NTLM authentication in MailEnable Professional 2.0 and Enterprise 2.0 allows remote attackers to (1) execute arbitrary code via unspecified vectors involving crafted base64 encoded NTLM Type 3 messages, or (2) cause a denial of service via crafted base64 encoded NTLM Type 1 messages, which trigger a buffer over-read.
How severe is CVE-2006-5177?: CVE-2006-5177 has a CVSS 2.0 base score of 9.3, rated critical severity.
Is CVE-2006-5177 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 7% (93rd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-5177?: CVE-2006-5177 primarily affects Mailenable Mailenable Enterprise. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2006-5177?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its critical severity, prioritise patching exposed systems.
When was CVE-2006-5177 published?: CVE-2006-5177 was published on 2006-10-10 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:a:mailenable:mailenable_enterprise:2.0:*:*:*:*:*:*:*
cpe:2.3:a:mailenable:mailenable_professional:2.0:*:*:*:*:*:*:*

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