Unrated severityCISA KEVNVD Advisory· Published Sep 27, 2023· Updated Oct 21, 2025
WS_FTP Server Ad Hoc Transfer Module .NET Deserialization Vulnerability
CVE-2023-40044
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.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
2- Range: <8.7.4, <8.8.2
- Progress Software Corporation/WS_FTP Serverv5Range: 8.8.0
Patches
Vulnerability mechanics
References
8- community.progress.com/s/article/WS-FTP-Server-Critical-Vulnerability-September-2023mitrevendor-advisory
- www.progress.com/ws_ftpmitreproduct
- packetstormsecurity.com/files/174917/Progress-Software-WS_FTP-Unauthenticated-Remote-Code-Execution.htmlmitre
- attackerkb.com/topics/bn32f9sNax/cve-2023-40044mitre
- censys.com/cve-2023-40044/mitre
- www.assetnote.io/resources/research/rce-in-progress-ws-ftp-ad-hoc-via-iis-http-modules-cve-2023-40044mitre
- www.rapid7.com/blog/post/2023/09/29/etr-critical-vulnerabilities-in-ws_ftp-server/mitre
- www.theregister.com/2023/10/02/ws_ftp_update/mitre
News mentions
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