How severe is CVE-2005-4266?

CVE-2005-4266 has a CVSS 2.0 base score of 7.5, rated high severity.

Is CVE-2005-4266 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2005-4266?

CVE-2005-4266 primarily affects Alt-n Mdaemon. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.

How do I fix CVE-2005-4266?

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-2005-4266 published?

CVE-2005-4266 was published on 2005-12-15 and last updated on 2026-06-16.

CVE-2005-4266

CVE-2005-4266 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: 1% (67th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Alt-n Mdaemon
Published: 2005-12-15
Last modified: 2026-06-16

Description

WorldClient.dll in Alt-N MDaemon and WorldClient 8.1.3 trusts a Session parameter that contains a randomly generated session ID that is associated with a username, which allows remote attackers to perform actions as other users by guessing or sniffing the random value.

Frequently asked questions

What is CVE-2005-4266?: WorldClient.dll in Alt-N MDaemon and WorldClient 8.1.3 trusts a Session parameter that contains a randomly generated session ID that is associated with a username, which allows remote attackers to perform actions as other users by guessing or sniffing the random value.
How severe is CVE-2005-4266?: CVE-2005-4266 has a CVSS 2.0 base score of 7.5, rated high severity.
Is CVE-2005-4266 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 1% (67th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2005-4266?: CVE-2005-4266 primarily affects Alt-n Mdaemon. In total, 2 product configurations (CPEs) are listed as vulnerable; see the affected-products list for the exact versions.
How do I fix CVE-2005-4266?: 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-2005-4266 published?: CVE-2005-4266 was published on 2005-12-15 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:a:alt-n:mdaemon:8.1.3:*:*:*:*:*:*:*
cpe:2.3:a:alt-n:worldclient:8.1.3:*:*:*:*:*:*:*

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