AEGLIX vulnerability intelligence
CVE-2023-40044
CRITICAL · CVSS 10.0 · Analyzed
Published: 2023-09-27 · Updated: 2026-06-17 · Source: NVD
Vulnerability overview
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.
Severity and scoring
- CVSS score
- 10.0 · CRITICAL
- CVSS version
- 3.1
- CVSS vector
- CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H
- Weaknesses
- CWE-502
CVSS measures technical severity; it does not establish whether this vulnerability is being exploited in your environment.
Known exploitation and remediation
Listed in CISA’s Known Exploited Vulnerabilities catalog.
- Affected product
- Progress · WS_FTP Server
- Added to catalog
- 2023-10-05
- Required action
- Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
- CISA remediation due date
- 2023-10-26
CISA deadlines apply to the organizations covered by its directives. Confirm your own remediation requirements.
Verify affected versions and patch availability in the vendor advisory before making changes.
Affected products and versions
cpe:2.3:a:progress:ws_ftp_server:*:*:*:*:*:*:*:*
Before (exclusive): 8.7.4
cpe:2.3:a:progress:ws_ftp_server:*:*:*:*:*:*:*:*
From (inclusive): 8.8
Before (exclusive): 8.8.2
These are NVD CPE applicability entries. Some products depend on configuration conditions; consult the official record to confirm applicability.
Advisories and 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