CVE-2023-40044

🔥 Known Exploited (CISA KEV)CRITICAL

10.0

CVSS Severity Score

EPSS Score0.0000%

EPSS Percentile0.00th

Published2023-09-27

Last Modified2026-06-17

Data SourcesNVDCISA KEV

Vulnerability 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.

Affected Platforms (CPE)

📦

Progress

Ws Ftp Server

< 8.7.4>= 8.8 and < 8.8.2

References & Advisories

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

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

🔗 https://censys.com/cve-2023-40044/

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

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

🔗 https://www.progress.com/ws_ftp

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

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

Vulnerability Description

Affected Platforms (CPE)

Ws Ftp Server

References & Advisories

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