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CVE-2023-40044

WS_FTP Server Ad Hoc Transfer Module .NET Deserialization Vulnerability

Published: Sep 27, 2023Updated: Oct 31, 2025 Sources: CVE List NVD BDUCWE-502
10.0CRITICAL
NVD MITRE
EPSS Score
90.1%
Top 0.2%
CISA KEV
Active Exploitation
Since Oct 5, 2023
Exploits
1 Known
Remediation
Patch Available
Self-Check
Nuclei · OpenVAS

Description

In WS_FTP Server versions prior to 8.7.4 and 8.8.2, a pre-authenticated attacker could leverage a .NET deserialization vulnerability in the Ad Hoc Transfer module to execute remote commands on the underlying WS_FTP Server operating system.

No summary for this CVE yet.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:CC:HI:HA:H
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:CScope
Changed
Impact
C:HConfidentiality
High
I:HIntegrity
High
A:HAvailability
High
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Weaknesses

CWE-502

Affected Products

Progress Software Corporation
commercial·USaka whatsup gold, moveit transfer, loadmaster
WS_FTP ServerOn-premNetwork Device
Networking Infrastructure / network-management
Ipswitch Inc.
commercial
WS_FTP ServerOn-prem
Networking Infrastructure / network-management
progress
commercial·CAaka ws ftp server, whatsup gold, moveit transfer
ws ftp serverOn-premNetwork Device
Networking Infrastructure / network-management

Exploitability

CISA Known Exploited Vulnerability
Added to KEV:Oct 5, 2023
Remediation due:Oct 26, 2023
Ransomware:Known ransomware use

Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.

1 exploit source identified

Exploit details including PoC links, Metasploit modules, and scanner templates are available after registration.

View exploit details
Official Patch Available
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Attack Graph

Products CVE Techniques Tactics

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MITRE ATT&CK

3 techniques
Execution
Initial Access
View detailed technique mapping

References

https://www.progress.com/ws_ftp
progress.com
https://community.progress.com/s/article/WS-FTP-Server-Critical-Vulnerability-September-2023
community.progress.com
https://www.theregister.com/2023/10/02/ws_ftp_update/
theregister.com
and 7 more references View all →

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