CVE-2009-4105

TYPSoft FTP Server 1.10 - Authenticated Denial of Service via APPE and DELE Command Sequence

Title source: llm
STIX 2.1

Exploitation Summary

EIP tracks 1 public exploit for CVE-2009-4105. PoCs published by leinakesi.

AI-analyzed exploit summary This exploit demonstrates a Denial of Service (DoS) vulnerability in TYPSoft FTP Server Version 1.10 by sending a sequence of 'APPE' and 'DELE' commands in the same socket connection, causing the server to crash.

Description

TYPSoft FTP Server 1.10 allows remote authenticated users to cause a denial of service (crash) by sending an APPE (append) command immediately followed by a DELE (delete) command without sending file data in between these two commands.

Exploits (1)

exploitdb WORKING POC VERIFIED
by leinakesi · textdoswindows
https://www.exploit-db.com/exploits/10223

This exploit demonstrates a Denial of Service (DoS) vulnerability in TYPSoft FTP Server Version 1.10 by sending a sequence of 'APPE' and 'DELE' commands in the same socket connection, causing the server to crash.

Classification
Working Poc 95%
Attack Type
Dos
Complexity
Trivial
Reliability
Reliable
Target: TYPSoft FTP Server Version 1.10
Auth required
Prerequisites: Network access to the FTP server · Valid credentials for authentication
devstral-2 · analyzed Feb 16, 2026 Full analysis →

References (4)

Core 4
Core References
Third Party Advisory, VDB Entry mailing-list x_refsource_bugtraq
http://www.securityfocus.com/archive/1/508048/100/0/threaded
Exploit vdb-entry x_refsource_bid
http://www.securityfocus.com/bid/37114
Third Party Advisory, VDB Entry vdb-entry x_refsource_sectrack
http://www.securitytracker.com/id?1023234
Third Party Advisory, VDB Entry vdb-entry x_refsource_xf
https://exchange.xforce.ibmcloud.com/vulnerabilities/54407

Scores

EPSS 0.0352
EPSS Percentile 87.8%

Details

CWE
CWE-20
Status published
Products (1)
typsoft/typsoft_ftp_server 1.10
Published Nov 29, 2009
Tracked Since Feb 18, 2026