CVE-2023-40044

Known Exploited Public Exploit
WS_FTP Server Ad Hoc Transfer Module .NET Deserialization 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.

Category

10.0
CVSS
Severity: Critical
CVSS 3.1 •
EPSS 94.43% Top 5%
KEV Since 
Vendor Advisory progress.com
Affected: Progress Software Corporation WS_FTP Server
Published at:
Updated at:

References

Link Tags
https://www.progress.com/ws_ftp product
https://community.progress.com/s/article/WS-FTP-Server-Critical-Vulnerability-September-2023 vendor advisory
https://www.theregister.com/2023/10/02/ws_ftp_update/ third party advisory press/media coverage
https://www.rapid7.com/blog/post/2023/09/29/etr-critical-vulnerabilities-in-ws_ftp-server/ third party advisory broken link
https://attackerkb.com/topics/bn32f9sNax/cve-2023-40044 third party advisory
https://censys.com/cve-2023-40044/ third party advisory
https://www.assetnote.io/resources/research/rce-in-progress-ws-ftp-ad-hoc-via-iis-http-modules-cve-2023-40044 third party advisory exploit
http://packetstormsecurity.com/files/174917/Progress-Software-WS_FTP-Unauthenticated-Remote-Code-Execution.html third party advisory vdb entry exploit

Frequently Asked Questions

What is the severity of CVE-2023-40044?
CVE-2023-40044 has been scored as a critical severity vulnerability.
How to fix CVE-2023-40044?
To fix CVE-2023-40044, make sure you are using an up-to-date version of the affected component(s) by checking the vendor release notes. As for now, there are no other specific guidelines available.
Is CVE-2023-40044 being actively exploited in the wild?
It is confirmed that CVE-2023-40044 is actively exploited. Be extra cautious if you are using vulnerable components. According to its EPSS score, there is a ~94% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2023-40044?
CVE-2023-40044 affects Progress Software Corporation WS_FTP Server.
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