CVE-2000-0990

NONECVSS 0.0

0.0

cmd5checkpw 0.21 and earlier allows remote attackers to cause a denial of service via an "SMTP AUTH" command with an unknown username.

CVSS v3: —
EG Score: —
EPSS: 73.3%
KEV: Not listed

Published

December 19, 2000

Last Modified

April 16, 2026

References (8)

cve@mitrehttp://archives.neohapsis.com/archives/bugtraq/2000-10/0258.html
cve@mitrehttp://members.elysium.pl/brush/cmd5checkpw/changes.html
cve@mitrehttp://www.securityfocus.com/bid/1809
cve@mitrehttps://exchange.xforce.ibmcloud.com/vulnerabilities/5382
af854a3a-2127-422b-91ae-364da2661108http://archives.neohapsis.com/archives/bugtraq/2000-10/0258.html
af854a3a-2127-422b-91ae-364da2661108http://members.elysium.pl/brush/cmd5checkpw/changes.html
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/bid/1809
af854a3a-2127-422b-91ae-364da2661108https://exchange.xforce.ibmcloud.com/vulnerabilities/5382

Data Freshness Timeline

(refreshed 14× in last 7d / 20× 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
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2026-05-26 07:16 UTCepss_batch
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2026-05-24 16:42 UTCepss_batch
2026-05-22 21:15 UTCepss_batch
2026-05-21 22:38 UTCepss_batch
2026-05-20 22:36 UTCepss_batch
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2026-05-18 21:29 UTCepss_batch
2026-05-18 21:29 UTCepss_batch

Frequently asked(4)

What is CVE-2000-0990?

CVE-2000-0990 is a none vulnerability published on December 19, 2000. cmd5checkpw 0.21 and earlier allows remote attackers to cause a denial of service via an "SMTP AUTH" command with an unknown username.

When was CVE-2000-0990 disclosed?

CVE-2000-0990 was first published in the National Vulnerability Database on December 19, 2000, 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-2000-0990 actively exploited?

CVE-2000-0990 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 73.3% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

How do I remediate CVE-2000-0990?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-2000-0990, 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-2000-0990

📅 Published

🔄 Last Modified

🔗 References (8)