CVE-1999-1568

HIGHNVD 7.57.5—Trending — 3 sources updated this week

7.5

Off-by-one error in NcFTPd FTP server before 2.4.1 allows a remote attacker to cause a denial of service (crash) via a long PORT command.

CVSS v3: 7.5
EG Score: 7.5(medium)
EPSS: 82.8%
KEV: Not listed

Published

January 1, 1999

Last Modified

April 16, 2026

References (6)

cve@mitrehttp://marc.info/?l=bugtraq&m=91981352617720&w=2
cve@mitrehttp://www.securityfocus.com/archive/1/12699
cve@mitrehttps://exchange.xforce.ibmcloud.com/vulnerabilities/1833
af854a3a-2127-422b-91ae-364da2661108http://marc.info/?l=bugtraq&m=91981352617720&w=2
af854a3a-2127-422b-91ae-364da2661108http://www.securityfocus.com/archive/1/12699
af854a3a-2127-422b-91ae-364da2661108https://exchange.xforce.ibmcloud.com/vulnerabilities/1833

Weakness Classification(1)

MITRE Common Weakness Enumeration — the root-cause categories this CVE belongs to.

CWE-193Off-by-one Error

Data Freshness Timeline

(refreshed 12× 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.

2026-06-02 20:10 UTCepss_batch
2026-06-01 13:48 UTCepss_batch
2026-05-31 22:39 UTCEG score recompute
2026-05-31 22:39 UTCGHSA enrichment
2026-05-31 22:27 UTCepss_batch
2026-05-31 00:13 UTCepss_batch
2026-05-31 00:13 UTCepss_batch
2026-05-29 13:40 UTCepss_batch
2026-05-28 13:42 UTCepss_batch
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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
2026-05-26 13:41 UTCepss_batch
2026-05-26 13:41 UTCepss_batch
2026-05-26 07:16 UTCepss_batch
2026-05-26 07:16 UTCepss_batch
2026-05-24 16:42 UTCepss_batch

Frequently asked(5)

What is CVE-1999-1568?

CVE-1999-1568 is a high vulnerability published on January 1, 1999. Off-by-one error in NcFTPd FTP server before 2.4.1 allows a remote attacker to cause a denial of service (crash) via a long PORT command.

When was CVE-1999-1568 disclosed?

CVE-1999-1568 was first published in the National Vulnerability Database on January 1, 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-1999-1568 actively exploited?

CVE-1999-1568 is not currently on CISA's Known Exploited Vulnerabilities catalog. FIRST EPSS estimates a 82.8% percentile likelihood of exploitation in the next 30 days — higher percentiles indicate greater predicted risk.

What is the CVSS score of CVE-1999-1568?

CVE-1999-1568 has a CVSS v3 base score of 7.5 (NVD).

How do I remediate CVE-1999-1568?

Patch to the fixed version published by the affected vendor. Where vendor advisories exist for CVE-1999-1568, 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-1999-1568

📅 Published

🔄 Last Modified

🔗 References (6)