How severe is CVE-2006-2646?

CVE-2006-2646 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2006-2646 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (90th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2006-2646?

CVE-2006-2646 primarily affects Alt-n Mdaemon. In total, 42 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2006-2646?

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

When was CVE-2006-2646 published?

CVE-2006-2646 was published on 2006-05-30 and last updated on 2026-06-16.

CVE-2006-2646

CVE-2006-2646 is a high-severity vulnerability in Alt-n Mdaemon with a CVSS 2.0 base score of 7.5. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: High (CVSS 2.0 base score 7.5)
EPSS exploit prediction: 5% (90th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Alt-n Mdaemon
Published: 2006-05-30
Last modified: 2026-06-16

Description

Buffer overflow in Alt-N MDaemon, possibly 9.0.1 and earlier, allows remote attackers to execute arbitrary code via a long A0001 argument that begins with a '"' (double quote).

Frequently asked questions

What is CVE-2006-2646?: Buffer overflow in Alt-N MDaemon, possibly 9.0.1 and earlier, allows remote attackers to execute arbitrary code via a long A0001 argument that begins with a '"' (double quote).
How severe is CVE-2006-2646?: CVE-2006-2646 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2006-2646 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 5% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2006-2646?: CVE-2006-2646 primarily affects Alt-n Mdaemon. In total, 42 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2006-2646?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround. Given its high severity, prioritise patching exposed systems.
When was CVE-2006-2646 published?: CVE-2006-2646 was published on 2006-05-30 and last updated on 2026-06-16.

References

Affected products (42)

cpe:2.3:a:alt-n:mdaemon:2.8:*:*:*:*:*:*:*
cpe:2.3:a:alt-n:mdaemon:2.8.5.0:*:*:*:*:*:*:*
cpe:2.3:a:alt-n:mdaemon:3.0.3:*:*:*:*:*:*:*
cpe:2.3:a:alt-n:mdaemon:3.0.4:*:*:*:*:*:*:*
cpe:2.3:a:alt-n:mdaemon:3.1.1:*:*:*:*:*:*:*
cpe:2.3:a:alt-n:mdaemon:3.1.2:*:*:*:*:*:*:*
cpe:2.3:a:alt-n:mdaemon:3.1_beta:*:*:*:*:*:*:*
cpe:2.3:a:alt-n:mdaemon:3.5.0:*:*:*:*:*:*:*
cpe:2.3:a:alt-n:mdaemon:3.5.1:*:*:*:*:*:*:*
cpe:2.3:a:alt-n:mdaemon:3.5.4:*:*:*:*:*:*:*
cpe:2.3:a:alt-n:mdaemon:3.5.4:*:pro:*:*:*:*:*
cpe:2.3:a:alt-n:mdaemon:3.5.4:*:standard:*:*:*:*:*
cpe:2.3:a:alt-n:mdaemon:3.5.6:*:*:*:*:*:*:*
cpe:2.3:a:alt-n:mdaemon:5.0:*:*:*:*:*:*:*
cpe:2.3:a:alt-n:mdaemon:5.0:*:pro:*:*:*:*:*
cpe:2.3:a:alt-n:mdaemon:5.0.1:*:*:*:*:*:*:*
cpe:2.3:a:alt-n:mdaemon:5.0.2:*:*:*:*:*:*:*
cpe:2.3:a:alt-n:mdaemon:5.0.3:*:*:*:*:*:*:*
cpe:2.3:a:alt-n:mdaemon:5.0.4:*:*:*:*:*:*:*
cpe:2.3:a:alt-n:mdaemon:5.0.5:*:*:*:*:*:*:*
cpe:2.3:a:alt-n:mdaemon:5.0.6:*:*:*:*:*:*:*
cpe:2.3:a:alt-n:mdaemon:5.0.7:*:*:*:*:*:*:*
cpe:2.3:a:alt-n:mdaemon:6.0:*:*:*:*:*:*:*
cpe:2.3:a:alt-n:mdaemon:6.0.5:*:*:*:*:*:*:*
cpe:2.3:a:alt-n:mdaemon:6.0.6:*:*:*:*:*:*:*
cpe:2.3:a:alt-n:mdaemon:6.0.7:*:*:*:*:*:*:*
cpe:2.3:a:alt-n:mdaemon:6.5.0:*:*:*:*:*:*:*
cpe:2.3:a:alt-n:mdaemon:6.5.1:*:*:*:*:*:*:*
cpe:2.3:a:alt-n:mdaemon:6.5.2:*:*:*:*:*:*:*
cpe:2.3:a:alt-n:mdaemon:6.7.5:*:*:*:*:*:*:*
cpe:2.3:a:alt-n:mdaemon:6.7.9:*:*:*:*:*:*:*
cpe:2.3:a:alt-n:mdaemon:6.8.0:*:*:*:*:*:*:*
cpe:2.3:a:alt-n:mdaemon:6.8.1:*:*:*:*:*:*:*
cpe:2.3:a:alt-n:mdaemon:6.8.2:*:*:*:*:*:*:*
cpe:2.3:a:alt-n:mdaemon:6.8.3:*:*:*:*:*:*:*
cpe:2.3:a:alt-n:mdaemon:6.8.4:*:*:*:*:*:*:*
cpe:2.3:a:alt-n:mdaemon:6.8.5:*:*:*:*:*:*:*
cpe:2.3:a:alt-n:mdaemon:7.2:*:*:*:*:*:*:*
cpe:2.3:a:alt-n:mdaemon:8.1.1:*:*:*:*:*:*:*
cpe:2.3:a:alt-n:mdaemon:8.1.3:*:*:*:*:*:*:*

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