CVEs / CVE-2023-40044
CVE-2023-40044: Progress WS_FTP Server Deserialization of Untrusted Data Vulnerability
- Known exploited in the CISA KEV catalog since 5 Oct 2023
- high 8.8 CVSS 3.1 (NVD)
- EPSS 90.3% chance of exploitation in the next 30 days, higher than 99% of CVEs (30 Oct 2026)
- Last changed at its sources
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Summary
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.
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 and fixed versions
| Product | Affected | Fixed in |
|---|---|---|
| Progress Software Corporation WS_FTP Server | from 8.8.0, before 8.8.2 | 8.8.2 |
| Progress Software Corporation WS_FTP Server | from 8.7.0, before 8.7.4 | 8.7.4 |
Exploitation
| In CISA KEV since | 5 Oct 2023 |
|---|---|
| Due date for US federal agencies | 26 Oct 2023 |
| Used in ransomware campaigns | Known |
| Required action | Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. |
Severity
| CVSS 3.1 | 8.8 highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:HScored by NVD |
|---|---|
| Weakness | CWE-502 |
References
- CVE-2023-40044 on NVD
- CVE-2023-40044 in the CISA KEV catalog
- https://community.progress.com/s/article/WS-FTP-Server-Critical-Vulnerability-September-2023 (cited by CISA)
- 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
Sources
Exploitation status from the CISA Known Exploited Vulnerabilities catalog. EPSS scores from FIRST. Descriptions, severity and references from the National Vulnerability Database. Open-source package versions from OSV (CC-BY 4.0). Text is shown as each source states it; Stackurity does not edit it. Check the vendor's advisory before acting.
This product uses data from the NVD API but is not endorsed or certified by the NVD.