How severe is CVE-1999-0844?

CVE-1999-0844 has a CVSS 2.0 base score of 5.0, rated medium severity.

Is CVE-1999-0844 being actively exploited?

It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.

What products are affected by CVE-1999-0844?

CVE-1999-0844 primarily affects Deerfield 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-1999-0844?

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

When was CVE-1999-0844 published?

CVE-1999-0844 was published on 1999-11-24 and last updated on 2026-06-16.

CVE-1999-0844

CVE-1999-0844 is a medium-severity vulnerability in Deerfield Mdaemon with a CVSS 2.0 base score of 5.0. It is not currently listed as actively exploited by CISA, and its EPSS exploit-prediction score is low.

Key facts

Severity: Medium (CVSS 2.0 base score 5.0)
EPSS exploit prediction: 6% (92nd percentile)
Actively exploited: Not listed in CISA KEV
Affected product: Deerfield Mdaemon
Published: 1999-11-24
Last modified: 2026-06-16

Description

Denial of service in MDaemon WorldClient and WebConfig services via a long URL.

Frequently asked questions

What is CVE-1999-0844?: Denial of service in MDaemon WorldClient and WebConfig services via a long URL.
How severe is CVE-1999-0844?: CVE-1999-0844 has a CVSS 2.0 base score of 5.0, rated medium severity.
Is CVE-1999-0844 being actively exploited?: It is not currently listed in CISA's KEV catalog. Its EPSS exploit-prediction score is 6% (92nd percentile), an estimate of the probability of exploitation in the next 30 days.
What products are affected by CVE-1999-0844?: CVE-1999-0844 primarily affects Deerfield 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-1999-0844?: Review the linked vendor and NVD advisories for patched versions and mitigations, then upgrade or apply the recommended workaround.
When was CVE-1999-0844 published?: CVE-1999-0844 was published on 1999-11-24 and last updated on 2026-06-16.

References

Affected products (2)

cpe:2.3:a:deerfield:mdaemon:2.8.5:*:*:*:*:*:*:*
cpe:2.3:a:deerfield:mdaemon:2.8.6:*:*:*:*:*:*:*

More vulnerabilities in Deerfield Mdaemon

CVE-1999-0846 — Medium (CVSS 5.0): Denial of service in MDaemon 2.7 via a large number of connection attempts.

All CVEs affecting Deerfield Mdaemon →