CVE-2000-0647: WFTPD and WFTPD Pro 2.41 allows remote attackers to cause a denial of service by executing an MLST command bef

This month

MEDIUM 5.0DOWNGRADE

CVE-2000-0647 is a medium-severity flaw (CVSS 5.0) affecting wftpd. Below: why it ranks where it does, which versions are affected, what to do, and the exact commands.

WFTPD and WFTPD Pro 2.41 allows remote attackers to cause a denial of service by executing an MLST command before logging into the server.

Why this priority

EPSS top 7%: very likely to be exploited
Public exploit reference

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

Risk facts

CVSS score	5.0 (Medium)
EPSS exploit chance	5.3% (top 7%)
CISA exploited list	No
Published	2000-07-21
Last modified	2026-06-16

Publisher (CNA): MITRE · Vendor: texas imperial software

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

Am I affected?

Timeline

2000-07-21 04:00 UTCPublished CVE record published
2026-06-16 21:52 UTCUpdated Record last modified

texas imperial software wftpd DOWNGRADE

Affected: 2.4.1 · 2.4.1_rc11 · 2.34 · 2.40

Fixed in: no fixed release known

Safe to downgrade to: a release before 2.4.1

1. Check installed version

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

2. No fixed release: DOWNGRADE to a release before 2.4.1 (Debian / Ubuntu)

apt-cache madison wftpd sudo apt install wftpd=<VERSION_BEFORE_2.4.1> sudo apt-mark hold wftpd

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

dnf --showduplicates list wftpd sudo dnf downgrade wftpd-<VERSION_BEFORE_2.4.1> sudo dnf versionlock add wftpd

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: WFTPD 2.4.1RC11 - 'MLST' Remote Denial of Service

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-2000-0647?

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

Is CVE-2000-0647 being exploited?

CVE-2000-0647 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-2000-0647 affect?

CVE-2000-0647 affects wftpd. Severity is medium (CVSS 5.0). WFTPD and WFTPD Pro 2.41 allows remote attackers to cause a denial of service by executing an MLST command before logging into the server.

How urgent is CVE-2000-0647?

Priority 46/100. EPSS top 7%: very likely to be exploited; Public exploit reference

Related CVEs

CVE-2023-33263 HIGH 7.5 DOWNGRADE In WFTPD 3.25, usernames and password hashes are stored in an openly viewable wftpd.ini configuration file wit
CVE-2007-0311 MEDIUM 5.0 UPGRADE UPGRADE Texas Imperial Software WFTPD and WFTPD Pro Server 3.25 and earlier allow remote attackers to cause a denial o
CVE-2006-5826 MEDIUM 5.8 DOWNGRADE Buffer overflow in Texas Imperial Software WFTPD Pro Server 3.23.1.1 allows remote authenticated users to exec
CVE-2006-4318 MEDIUM 6.5 DOWNGRADE Buffer overflow in WFTPD Server 3.23 allows remote attackers to execute arbitrary code via long SIZE commands.
CVE-2004-1642 MEDIUM 5.0 DOWNGRADE WFTPD Pro Server 3.21 allows remote authenticated users to cause a denial of service (crash) via a series of l

References

← Back to latest CVEs