CVEvulnerability
CVE-2023-40044
CISA Known Exploited Vulnerability
Progress WS_FTP Server Deserialization of Untrusted Data Vulnerability — Progress WS_FTP Server
Progress WS_FTP Server contains a deserialization of untrusted data vulnerability in the Ad Hoc Transfer module that allows an authenticated attacker to execute remote commands on the underlying operating system.
- Added to KEV
- 2023-10-05
- Remediation due
- 2023-10-26
- Ransomware use
- Known
- Required action
- Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- Notes
- https://community.progress.com/s/article/WS-FTP-Server-Critical-Vulnerability-September-2023; https://nvd.nist.gov/vuln/detail/CVE-2023-40044
- Status
- Analyzed
- Published
- 2023-09-27
- Last modified
- 2026-06-17
- Assigner
- [email protected]
- CVSS 3.1 ([email protected])
- 10.0 CRITICAL — CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- CVSS 3.1 ([email protected])
- 8.8 HIGH — CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
- Weaknesses
- CWE-502
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 configurations
• progress ws ftp server (< 8.7.4)
• progress ws ftp server (>= 8.8 < 8.8.2)
Related
Weakness · CWE (1)
- CWE-502 Deserialization of Untrusted Data weakness
References
- http://packetstormsecurity.com/files/174917/Progress-Software-WS_FTP-Unauthenticated-Remote-Code-Execution.html Exploit, Third Party Advisory, VDB Entry
- https://attackerkb.com/topics/bn32f9sNax/cve-2023-40044 Third Party Advisory
- https://censys.com/cve-2023-40044/ Third Party Advisory
- https://community.progress.com/s/article/WS-FTP-Server-Critical-Vulnerability-September-2023 Vendor Advisory
- https://www.assetnote.io/resources/research/rce-in-progress-ws-ftp-ad-hoc-via-iis-http-modules-cve-2023-40044 Exploit, Third Party Advisory
- https://www.progress.com/ws_ftp Product
- 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.html Exploit, Third Party Advisory, VDB Entry
- https://attackerkb.com/topics/bn32f9sNax/cve-2023-40044 Third Party Advisory
- https://censys.com/cve-2023-40044/ Third Party Advisory
- https://community.progress.com/s/article/WS-FTP-Server-Critical-Vulnerability-September-2023 Vendor Advisory
- https://www.assetnote.io/resources/research/rce-in-progress-ws-ftp-ad-hoc-via-iis-http-modules-cve-2023-40044 Exploit, Third Party Advisory
- https://www.progress.com/ws_ftp Product
- 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-2023-40044 US Government Resource