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Vulnerability record · CVE-2009-4105 · published 29 November 2009

CVE-2009-4105: Typsoft ftp server improper input validation vulnerability

TTypsoft · Typsoft Ftp Server

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.

3.5 CVSS 2.0 Low EPSS 3.5% · top 11.2% CWE-20 · Improper input validation
3.5CVSS 2.0 base score
3.5%EPSS exploitation probability, 30 days
NoNot in CISA KEV
1Affected product versions listed by NVD
8References, 2 tagged exploit
16 Jun 2026Last modified by NVD

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.

AV:N/AC:M/Au:S/C:N/I:N/A:P

Affected products

1 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
http://www.securityfocus.com/archive/1/508048/100/0/threaded
http://www.securityfocus.com/bid/37114 Exploit
http://www.securitytracker.com/id?1023234
https://exchange.xforce.ibmcloud.com/vulnerabilities/54407
http://www.securityfocus.com/archive/1/508048/100/0/threaded
http://www.securityfocus.com/bid/37114 Exploit
http://www.securitytracker.com/id?1023234
https://exchange.xforce.ibmcloud.com/vulnerabilities/54407

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

5.0CVE-2005-3294Typsoft ftp server vulnerabilityTypsoft FTP Server 1.11, with "Sub Directory Include" enabled, allows remote attackers to cause a denial of service (crash) by sending multiple RETR …EPSS 7.7%5.0CVE-2004-0252Typsoft ftp server vulnerabilityTYPSoft FTP Server 1.10 allows remote attackers to cause a denial of service (CPU consumption) via an empty USER name.EPSS 1.6%5.0CVE-2002-1354Typsoft ftp server vulnerabilityDirectory traversal vulnerability in TYPSoft FTP Server 0.99.8 allows local users to list the contents of arbitrary directories via a ... (dot dot do…EPSS 1.3%5.0CVE-2002-0558Typsoft ftp server vulnerabilityDirectory traversal vulnerability in TYPSoft FTP server 0.97.1 and earlier allows a remote authenticated user (possibly anonymous) to list arbitrary …EPSS 2.1%5.0CVE-2001-1156Typsoft ftp server vulnerabilityTYPSoft FTP 0.95 allows remote attackers to cause a denial of service (CPU consumption) via a "../../*" argument to (1) STOR or (2) RETR.EPSS 7.1%5.0CVE-2001-0294Typsoft ftp server vulnerabilityDirectory traversal vulnerability in TYPSoft FTP Server 0.85 allows remote attackers to read arbitrary files via (1) a .. (dot dot) in a GET command,…EPSS 1.7%4.0CVE-2012-5329Typsoft ftp server memory buffer overflow vulnerabilityBuffer overflow in TYPSoft FTP Server 1.1 allows remote authenticated users to cause a denial of service (application crash) via a long string in an …EPSS 8.5%4.0CVE-2009-1668Typsoft ftp server improper input validation vulnerabilityTYPSoft FTP Server 1.11 allows remote attackers to cause a denial of service (CPU consumption) by sending an ABOR (abort) command without an active f…EPSS 6.0%

Source: NIST National Vulnerability Database (record CVE-2009-4105), CISA KEV, FIRST EPSS (scores of 2026-09-28). This page is refreshed as NVD updates the record.