CVE-2023-40044

10.0 CRITICAL CISA KEV - Actively Exploited

Published: September 27, 2023 Modified: October 31, 2025

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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

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

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

http://packetstormsecurity.com/files/174917/Progress-Software-WS_FTP-Unauthenticated-Remote-Code-Execution.html

Source: security@progress.com

Exploit Third Party Advisory VDB Entry

https://attackerkb.com/topics/bn32f9sNax/cve-2023-40044

Source: security@progress.com

Third Party Advisory

https://censys.com/cve-2023-40044/

Source: security@progress.com

Third Party Advisory

https://community.progress.com/s/article/WS-FTP-Server-Critical-Vulnerability-September-2023

Source: security@progress.com

Vendor Advisory

https://www.assetnote.io/resources/research/rce-in-progress-ws-ftp-ad-hoc-via-iis-http-modules-cve-2023-40044

Source: security@progress.com

Exploit Third Party Advisory

https://www.progress.com/ws_ftp

Source: security@progress.com

Product

https://www.rapid7.com/blog/post/2023/09/29/etr-critical-vulnerabilities-in-ws_ftp-server/

Source: security@progress.com

Broken Link Third Party Advisory

https://www.theregister.com/2023/10/02/ws_ftp_update/

Source: security@progress.com

Press/Media Coverage Third Party Advisory

http://packetstormsecurity.com/files/174917/Progress-Software-WS_FTP-Unauthenticated-Remote-Code-Execution.html