CVE-2023-40044

HighCVSS 8.8/10Known exploited (CISA KEV)Last modified Jun 17, 2026

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.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-502

Affected software

Vendor	Product	Versions
Progress Software Corporation	WS_FTP Server	>= 8.8.0, < 8.8.2; >= 8.7.0, < 8.7.4

References

http://packetstormsecurity.com/files/174917/Progress-Software-WS_FTP-Unauthenticated-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
https://attackerkb.com/topics/bn32f9sNax/cve-2023-40044Third Party Advisory
https://censys.com/cve-2023-40044/Third Party Advisory
https://community.progress.com/s/article/WS-FTP-Server-Critical-Vulnerability-September-2023Vendor Advisory
https://www.assetnote.io/resources/research/rce-in-progress-ws-ftp-ad-hoc-via-iis-http-modules-cve-2023-40044Exploit, Third Party Advisory
https://www.progress.com/ws_ftpProduct
https://www.rapid7.com/blog/post/2023/09/29/etr-critical-vulnerabilities-in-ws_ftp-server/Broken Link, Third Party Advisory
https://www.theregister.com/2023/10/02/ws_ftp_update/Press/Media Coverage, Third Party Advisory
http://packetstormsecurity.com/files/174917/Progress-Software-WS_FTP-Unauthenticated-Remote-Code-Execution.htmlExploit, Third Party Advisory, VDB Entry
https://attackerkb.com/topics/bn32f9sNax/cve-2023-40044Third Party Advisory
https://censys.com/cve-2023-40044/Third Party Advisory
https://community.progress.com/s/article/WS-FTP-Server-Critical-Vulnerability-September-2023Vendor Advisory
https://www.assetnote.io/resources/research/rce-in-progress-ws-ftp-ad-hoc-via-iis-http-modules-cve-2023-40044Exploit, Third Party Advisory
https://www.progress.com/ws_ftpProduct
https://www.rapid7.com/blog/post/2023/09/29/etr-critical-vulnerabilities-in-ws_ftp-server/Broken Link, Third Party Advisory
https://www.theregister.com/2023/10/02/ws_ftp_update/Press/Media Coverage, Third Party Advisory
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2023-40044US Government Resource

Timeline

Published: Sep 27, 2023
Last modified: Jun 17, 2026
Added to CISA KEV: Oct 5, 2023
NVD status: Analyzed

Related CVEs from 2023

CVE-2023-400456.1In WS_FTP Server versions prior to 8.7.4 and 8.8.2, a reflected cross-site scripting (XSS) vulnerability exists in WS_FTP Server's Ad Hoc CVE-2023-400467.2In WS_FTP Server versions prior to 8.7.4 and 8.8.2, a SQL injection vulnerability exists in the WS_FTP Server manager interface. An attack CVE-2023-400474.8In WS_FTP Server version prior to 8.8.2, a stored cross-site scripting (XSS) vulnerability exists in WS_FTP Server's Management module. An CVE-2023-400486.5In WS_FTP Server version prior to 8.8.2, the WS_FTP Server Manager interface was missing cross-site request forgery (CSRF) protection on a CVE-2023-400495.3In WS_FTP Server version prior to 8.8.2, an unauthenticated user could enumerate files under the 'WebServiceHost' directory listing.CVE-2023-40059.8Insufficient Session Expiration in GitHub repository fossbilling/fossbilling prior to 0.5.5.CVE-2023-400508.8Upload profile either through API or user interface in Chef Automate prior to and including version 4.10.29 using InSpec check command with CVE-2023-400519.9This issue affects Progress Application Server (PAS) for OpenEdge in versions 11.7 prior to 11.7.18, 12.2 prior to 12.2.13, and innovation r CVE-2023-400527.5This issue affects Progress Application Server (PAS) for OpenEdge in versions 11.7 prior to 11.7.18, 12.2 prior to 12.2.13, and innovation r CVE-2023-400535.0A vulnerability has been identified within Serv-U 15.4 that allows an authenticated actor to insert content on the file share function featu CVE-2023-400548.8The Network Configuration Manager was susceptible to a Directory Traversal Remote Code Execution Vulnerability. This vulnerability allows a CVE-2023-400558.8The Network Configuration Manager was susceptible to a Directory Traversal Remote Code Execution Vulnerability. This vulnerability allows a