CVE-1999-0671

ToxSoft NextFTP - Buffer Overflow via CWD Command

Title source: llm

Exploitation Summary

EIP tracks 1 public exploit for CVE-1999-0671. PoCs published by UNYUN.

AI-analyzed exploit summary This exploit targets a buffer overflow vulnerability in NextFTP Ver1.82 by sending a malicious CWD command reply to execute arbitrary code (notepad.exe) on the client machine. It sets up a fake FTP server to deliver the payload.

Description

Buffer overflow in ToxSoft NextFTP client through CWD command.

Exploits (1)

exploitdb WORKING POC VERIFIED

by UNYUN · cremotewindows

https://www.exploit-db.com/exploits/19448

View Code ZIP pw:eip

This exploit targets a buffer overflow vulnerability in NextFTP Ver1.82 by sending a malicious CWD command reply to execute arbitrary code (notepad.exe) on the client machine. It sets up a fake FTP server to deliver the payload.

Classification

Working Poc 95%

Attack Type

Rce

Complexity

Moderate

Reliability

Reliable

Target: NextFTP Ver1.82

No auth needed

Prerequisites: Victim must connect to the malicious FTP server · NextFTP Ver1.82 must be used as the client

MITRE ATT&CK

T1190 - Exploit Public-Facing Application T1203 - Exploitation for Client Execution

devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (1)

Core 1

Core References

Third Party Advisory, VDB Entry vdb-entry x_refsource_bid

http://www.securityfocus.com/bid/572

Scores

EPSS 0.0159

EPSS Percentile 72.5%

Details

Status published

Products (1)

toxsoft/nextftp 1.82

Published Aug 03, 1999

Tracked Since Feb 18, 2026