Progress WS_FTP Server Deserialization of Untrusted Data Vulnerability

MITRE NVD CVE.ORG JSON API Print: PDF PDF

Summary

CVECVE-2023-40044
StatePUBLIC
Assigner[email protected]
Source PriorityCVE Program / NVD first with legacy fallback
Published2023-09-27 15:18:00 UTC
Updated2023-10-13 01:22:00 UTC
DescriptionIn 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.  

Risk And Classification

EPSS: 0.944360000 probability, percentile 0.999860000 (date 2026-04-16)

CISA KEV: Listed on 2023-10-05; due 2023-10-26; ransomware use Known

Problem Types: CWE-502

CISA Known Exploited Vulnerability

VendorProgress
ProductWS_FTP Server
NameProgress WS_FTP Server Deserialization of Untrusted Data Vulnerability
Required ActionApply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Noteshttps://community.progress.com/s/article/WS-FTP-Server-Critical-Vulnerability-September-2023; https://nvd.nist.gov/vuln/detail/CVE-2023-40044

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Application Progress Ws Ftp Server All All All All

References

ReferenceSourceLinkTags
CVE-2023-40044 | AttackerKB MISC attackerkb.com
Critical Vulnerabilities in WS_FTP Server | Rapid7 Blog MISC www.rapid7.com
Progress Customer Community MISC community.progress.com
Progress Software WS_FTP Unauthenticated Remote Code Execution ≈ Packet Storm MISC packetstormsecurity.com
WS_FTP - Secure FTP Server and Client Software MISC www.progress.com
Mass exploitation attempts against WS_FTP have begun • The Register MISC www.theregister.com
CVE-2023-40044: A Look at the Critical Ad Hoc Transfer Module Vulnerability in WS_FTP - Censys MISC censys.com
RCE in Progress WS_FTP Ad Hoc via IIS HTTP Modules (CVE-2023-40044) MISC www.assetnote.io
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
CISA Known Exploited Vulnerabilities catalog CISA www.cisa.gov kev

Legacy QID Mappings

  • 150742 WS_FTP Server Multiple Critical Vulnerabilities - (September 2023)
  • 27395 Progress WS_FTP Server Multiple Vulnerabilities
© CVE.report 2026 |

Use of this information constitutes acceptance for use in an AS IS condition. There are NO warranties, implied or otherwise, with regard to this information or its use. Any use of this information is at the user's risk. It is the responsibility of user to evaluate the accuracy, completeness or usefulness of any information, opinion, advice or other content. EACH USER WILL BE SOLELY RESPONSIBLE FOR ANY consequences of his or her direct or indirect use of this web site. ALL WARRANTIES OF ANY KIND ARE EXPRESSLY DISCLAIMED. This site will NOT BE LIABLE FOR ANY DIRECT, INDIRECT or any other kind of loss.

CVE, CWE, and OVAL are registred trademarks of The MITRE Corporation and the authoritative source of CVE content is MITRE's CVE web site. This site includes MITRE data granted under the following license.

Free CVE JSON API cve.report/api

CVE.report and Source URL Uptime Status status.cve.report