CVE-2003-0558: Buffer overflow in LeapFTP 2.7.3.600 allows remote FTP servers to execute arbitrary code via a long IP address

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HIGH 7.5DOWNGRADE

CVE-2003-0558 is a high-severity flaw (CVSS 7.5) affecting leapftp. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

Buffer overflow in LeapFTP 2.7.3.600 allows remote FTP servers to execute arbitrary code via a long IP address response to a PASV request.

Why this priority

High severity
EPSS top 1%: very likely to be exploited
Public exploit reference

No fix is published yet: follow the downgrade or mitigation steps.

Risk facts

CVSS score	7.5 (High)
EPSS exploit chance	56.5% (top 1%)
CISA exploited list	No
Published	2003-08-18
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: leapware

Last updated 2026-06-16 · Sources: CVE Program, NVD, CISA KEV, EPSS and vendor advisories · How we score

Am I affected?

Timeline

2003-08-18 04:00 UTCPublished CVE record published
2026-06-16 22:02 UTCUpdated Record last modified

leapware leapftp DOWNGRADE

Affected: 2.7.3.600

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.7.3.600

1. Check installed version

apt-cache policy leapftp || rpm -q leapftp || leapftp --version

2. No fixed release: DOWNGRADE to a release before 2.7.3.600 (Debian / Ubuntu)

apt-cache madison leapftp sudo apt install leapftp=<VERSION_BEFORE_2.7.3.600> sudo apt-mark hold leapftp

2. No fixed release: DOWNGRADE (RHEL / Amazon Linux / Fedora)

dnf --showduplicates list leapftp sudo dnf downgrade leapftp-<VERSION_BEFORE_2.7.3.600> sudo dnf versionlock add leapftp

Downgrade risk

Downgrading can break dependent software and may reopen older bugs. Read the distro advisory first and test on a non-production host.

After downgrade

Restart the service, and keep the package held until a fixed release ships.

Public exploits and detection

Public code exists for this CVE. Treat unpatched systems as at risk, and only run PoCs in a lab.

Exploit-DB: LeapWare LeapFTP 2.7.3.600 - PASV Reply Client Overflow (Metasploit)
Exploit-DB: LeapWare LeapFTP 2.7.x - Remote Buffer Overflow
Metasploit: LeapWare LeapFTP v2.7.3.600 PASV Reply Client Overflow

Verify at the official source NVD · CVE Program · Report a problem with this page
Scores and fixes here are computed automatically from those and other public sources. Confirm with the vendor advisory before changing production systems.

Quick answers

How do I fix CVE-2003-0558?

leapftp: downgrade or apply the listed mitigation. Exact commands for each OS are on this page.

Is CVE-2003-0558 being exploited?

CVE-2003-0558 is not on the CISA Known Exploited Vulnerabilities list at the time of the last update. Check again, as this can change.

What does CVE-2003-0558 affect?

CVE-2003-0558 affects leapftp. Severity is high (CVSS 7.5). Buffer overflow in LeapFTP 2.7.3.600 allows remote FTP servers to execute arbitrary code via a long IP address response to a PASV request.

How urgent is CVE-2003-0558?

Priority 56/100. High severity; EPSS top 1%: very likely to be exploited; Public exploit reference

Related CVEs

CVE-2005-2767 HIGH 7.5 DOWNGRADE Buffer overflow in LeapFTP allows remote attackers to execute arbitrary code via a long Host string in a Site

References

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