CVE-2008-5666

WinFTP FTP Server 2.3.0 - Authenticated Denial of Service via Invalid NLST Command

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 3 public exploits for CVE-2008-5666. PoCs published by dmnt, Julien Bedard, including Metasploit module auxiliary/dos/windows/ftp/winftp230_nlst.

AI-analyzed exploit summary This exploit targets WinFTP v2.3.0 by sending a series of FTP commands, including a malformed 'NLST -1' command, to trigger a denial-of-service condition. The script repeatedly connects and sends these commands to ensure the DoS effect.

Description

WinFTP FTP Server 2.3.0, when passive (aka PASV) mode is used, allows remote authenticated users to cause a denial of service via a sequence of FTP sessions that include an invalid "NLST -1" command.

Exploits (3)

exploitdb WORKING POC VERIFIED
by dmnt · pythondoswindows
https://www.exploit-db.com/exploits/6717

This exploit targets WinFTP v2.3.0 by sending a series of FTP commands, including a malformed 'NLST -1' command, to trigger a denial-of-service condition. The script repeatedly connects and sends these commands to ensure the DoS effect.

Classification
Working Poc 90%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: WinFTP v2.3.0
Auth required
Prerequisites: Network access to the target FTP server · Valid or anonymous FTP credentials
devstral-2 · analyzed Feb 16, 2026 Full analysis →
exploitdb WORKING POC VERIFIED
by Julien Bedard · perldoswindows
https://www.exploit-db.com/exploits/6581

This exploit targets a buffer overflow vulnerability in WinFTP Server 2.3.0 by sending an overly long argument to the NLST command, causing a denial of service (DoS). The script uses Perl and the Net::FTP module to connect and trigger the crash.

Classification
Working Poc 90%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: WinFTP Server 2.3.0
Auth required
Prerequisites: Network access to the target FTP server · Valid FTP credentials
devstral-2 · analyzed Feb 16, 2026 Full analysis →
metasploit WORKING POC
rubypoc
https://github.com/rapid7/metasploit-framework/blob/master/modules/auxiliary/dos/windows/ftp/winftp230_nlst.rb

This Metasploit module exploits a denial-of-service vulnerability in WinFTP 2.3.0 by sending an overly long argument to the NLST command after establishing a PASV connection. The exploit requires valid authentication but can work with anonymous credentials if NLST permissions are granted.

Classification
Working Poc 95%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: WinFTP 2.3.0
Auth required
Prerequisites: Valid FTP credentials (including anonymous if permitted) · Permission to execute NLST command
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (6)

Core 6
Core References
Third Party Advisory vdb-entry x_refsource_vupen
http://www.vupen.com/english/advisories/2008/2801
Third Party Advisory third-party-advisory x_refsource_sreason
http://securityreason.com/securityalert/4785
Vendor Advisory third-party-advisory x_refsource_secunia
http://secunia.com/advisories/32209
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id?1021040
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/45806
Exploit, Third Party Advisory exploit x_refsource_exploit-db
https://www.exploit-db.com/exploits/6717

Scores

EPSS 0.6329
EPSS Percentile 98.4%

Details

CWE
CWE-399
Status published
Products (1)
wftpserver/winftp_ftp_server 2.3.0
Published Dec 19, 2008
Tracked Since Feb 18, 2026