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CVE-1999-1568

7.5 · HIGH

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.

Published Jan 1, 1999ncftpCWE-193EPSS 2.32%

Overview

CVE-1999-1568 is a high-severity vulnerability affecting ncftp ncftpd_server. It was published on January 1, 1999 and has a CVSS 3.1 base score of 7.5 (HIGH).

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

Technical description

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.

Remediation

Check the references section for vendor advisories and patches from ncftp. Update ncftpd_server to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

Affected products

VendorProductVersionsStatus
ncftpncftpd_server>= 0, < 2.4.1Affected

Frequently asked questions

What is CVE-1999-1568?

CVE-1999-1568 is a high-severity vulnerability affecting ncftp ncftpd_server. It was published on January 1, 1999 and has a CVSS 3.1 base score of 7.5 (HIGH).

How severe is CVE-1999-1568?

This vulnerability has a CVSS 3.1 base score of 7.5, rated HIGH. It can be exploited remotely over the network. No authentication or special privileges are required for exploitation.

How do I fix or remediate CVE-1999-1568?

Check the references section for vendor advisories and patches from ncftp. Update ncftpd_server to the latest patched version. If immediate patching is not possible, review the CVSS vector to understand the attack surface and apply compensating controls such as network segmentation or access restrictions.

How can CyberStrike help with CVE-1999-1568?

CyberStrike is an open-source, AI-augmented pentesting engine. Rather than flag a version number, it tests whether an issue like CVE-1999-1568 is actually reachable in your own applications and APIs, then verifies each finding before reporting it. That tells you if the weakness is a real, exploitable risk in your environment or a false positive you can safely deprioritize.