CVE-1999-0844

NONECVSS 0.0Weaponized

0.0

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

CVSS v3: —
EG Score: —
EPSS: 89.3%
KEV: Not listed

Published

November 24, 1999

Last Modified

April 16, 2026

References (4)

cve@mitrehttp://www.securityfocus.com/bid/820
cve@mitrehttp://www.securityfocus.com/bid/823
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/820
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/823

Data Freshness Timeline

(refreshed 13× in last 7d / 19× in last 30d)

Every time one of our enrichment pipelines (NVD, MITRE cvelistV5, EPSS, CISA KEV, GHSA, OSV, vendor advisories) ran against this CVE. Most recent first.

2026-05-29 13:40 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
2026-05-27 13:37 UTCepss_batch
2026-05-27 13:37 UTCepss_batch
2026-05-26 13:41 UTCepss_batch
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2026-05-26 07:16 UTCepss_batch
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2026-05-24 16:42 UTCepss_batch
2026-05-21 22:38 UTCepss_batch
2026-05-20 22:36 UTCepss_batch
2026-05-20 11:20 UTCepss_batch
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2026-05-18 21:29 UTCepss_batch
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Publicly available exploits

(2 references)

Working exploit code is in the public domain (2 Exploit-DB entries). Defenders should treat patch urgency accordingly — public PoCs typically lead to mass-exploitation within 24-72 hours.

Exploit-DBEDB-19640✓ verified
First seen Nov 26, 1999
Alt-N WorldClient Pro 2.0.0.0/2.0.1.0/Standard 2.0.0.0 - Long URL Denial of Service
Open source ↗
Exploit-DBEDB-19639✓ verified
First seen Nov 24, 1999
Alt-N MDaemon 2.8.5 - WebConfig Overflow Denial of Service
Open source ↗

Frequently asked(4)

What is CVE-1999-0844?

CVE-1999-0844 is a none vulnerability published on November 24, 1999. Denial of service in MDaemon WorldClient and WebConfig services via a long URL.

When was CVE-1999-0844 disclosed?

CVE-1999-0844 was first published in the National Vulnerability Database on November 24, 1999, with the most recent update on April 16, 2026. EchelonGraph re-ingests CVE updates from NVD on a 2-hour cycle, so this page reflects the latest published state.

Is CVE-1999-0844 actively exploited?

CVE-1999-0844 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 89.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-1999-0844?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-1999-0844, EchelonGraph cross-links them in the Vendor Advisories panel below — those typically contain the canonical remediation steps, fixed version numbers, and any vendor-specific mitigations.

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CVE-1999-0844

📅 Published

🔄 Last Modified

🔗 References (4)