Overview
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.
https://community.progress.com/s/article/WS-FTP-Server-Critical-Vulnerability-September-2023; https://nvd.nist.gov/vuln/detail/CVE-2023-40044
Key Details
| Property | Value |
|---|---|
| CVE ID | CVE-2023-40044 |
| Vendor / Product | Progress — WS_FTP Server |
| NVD Published | 2023-09-27 |
| NVD Last Modified | 2025-10-31 |
| CVSS 3.1 Score | 10 |
| CVSS 3.1 Vector | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H |
| Severity | CRITICAL |
| CWE | CWE-502 |
| CISA KEV Added | 2023-10-05 |
| CISA KEV Deadline | 2023-10-26 |
| Known Ransomware Use | ⚠️ Yes |
CVSS 3.1 Breakdown
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High
Required Action
CISA BOD 22-01 Deadline: 2023-10-26.
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Timeline
| Date | Event |
|---|---|
| 2023-10-05 | Added to CISA Known Exploited Vulnerabilities catalog |
| 2023-10-26 | CISA BOD 22-01 remediation deadline |
References
| Resource | Type |
|---|---|
| NVD — CVE-2023-40044 | Vulnerability Database |
| CISA KEV Catalog Entry | US Government |