How severe is CVE-2000-0501?

CVE-2000-0501 has a CVSS 2.0 base score of 2.6, rated low severity.

Is CVE-2000-0501 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-2000-0501?

CVE-2000-0501 affects Alt-n Mdaemon. See the affected-products list for the exact vulnerable versions.

How do I fix CVE-2000-0501?

Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.

When was CVE-2000-0501 published?

CVE-2000-0501 was published on 2000-06-16 and last updated on 2026-06-16.

CVE-2000-0501

CVE-2000-0501 is a low-severity vulnerability in Alt-n Mdaemon with a CVSS 2.0 base score of 2.6. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Low (CVSS 2.0 base score 2.6)
EPSS exploit prediction: 4% (90th percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Alt-n Mdaemon
Published: 2000-06-16
Last modified: 2026-06-16

Description

Race condition in MDaemon 2.8.5.0 POP server allows local users to cause a denial of service by entering a UIDL command and quickly exiting the server.

Frequently asked questions

What is CVE-2000-0501?: Race condition in MDaemon 2.8.5.0 POP server allows local users to cause a denial of service by entering a UIDL command and quickly exiting the server.
How severe is CVE-2000-0501?: CVE-2000-0501 has a CVSS 2.0 base score of 2.6, rated low severity.
Is CVE-2000-0501 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 4% (90th percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-2000-0501?: CVE-2000-0501 affects Alt-n Mdaemon. See the affected-products list for the exact vulnerable versions.
How do I fix CVE-2000-0501?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-2000-0501 published?: CVE-2000-0501 was published on 2000-06-16 and last updated on 2026-06-16.

References

Affected products (1)

cpe:2.3:a:alt-n:mdaemon:2.8.5.0:*:*:*:*:*:*:*

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