Progress WS_FTP Server: OS command injection allows command execution
Summary
WS_FTP Server on Windows contains an OS command injection vulnerability in versions before 2024.0.7 and 2025.0.4. Under certain configurations, an attacker can execute arbitrary commands with elevated privileges. The CNA scores the issue as critical (CVSS 9.0); the vector indicates network access without privileges or user interaction, but with high complexity.
Affected
- Progress Software WS_FTP Server on Windows, versions before 2024.0.7
- Progress Software WS_FTP Server on Windows, versions before 2025.0.4
- Older release branches: Unknown.
Fixed in
- Upgrade to 2024.0.7 or later in the 2024 branch
- Upgrade to 2025.0.4 or later in the 2025 branch
Workaround
- No workaround confirmed. Contact Progress Software Technical Support for guidance on available mitigations.
- The configurations that trigger the issue are not publicly documented in the sources reviewed; check the vendor advisory first.
Exploitation
- CISA SSVC assessment: exploitation none, not automatable.
- No public exploit known. Aggregators report it as not exploited.
- CISA KEV status: not checked; re-check before finalising.
Our recommendation
- Inventory all WS_FTP Server instances, including version and internet reachability; prioritise internet-facing and partner-facing servers.
- Upgrade to 2024.0.7 or 2025.0.4, which also covers other fixes in the same release, including CVE-2026-84295 (CVSS 10.0, unauthenticated access to sensitive information).
- If patching is delayed, restrict access to the FTP service and admin interface to known networks after reviewing the vendor advisory.
- Review WS_FTP logs for unexpected child processes or unexplained administrator activity.
- Monitor the NVD entry and the CISA KEV catalogue.
Public exploits
PoC-in-GitHub, Metasploit and Exploit-DB list nothing for this CVE.
Research sources
- Progress Software advisory (official reference) progress.lightning.force.com
- VulDB entry CVE-2026-90865 vuldb.com
- Strix CVE summary CVE-2026-90865 www.strix.ai
- PSIRT CVE record CVE-2026-90865 psirt.com
- OffSeq radar CVE-2026-90865 radar.offseq.com
- SecurityOnline WS_FTP Server vulnerabilities securityonline.info
Researched and written up in English and German by an AI (Claude by Anthropic) based on NVD, CISA, EPSS and the sources listed. The vendor information is authoritative. Researched on 31 Oct 2026, 08:01.
Original description (NVD)
An OS command injection vulnerability in Progress Software WS_FTP Server versions prior to 2024.0.7 and 2025.0.4 on Windows could allow arbitrary command execution with elevated privileges under certain configurations.
Sources
The tracker combines official, freely usable data sources – updated continuously:
- NVD (NIST) – CVEs, rating (CVSS), affected products
- CISA KEV – vulnerabilities confirmed by CISA as actively exploited
- CISA Vulnrichment – CISA assessment (SSVC) in the official CVE record
- FIRST EPSS – probability of exploitation
- Microsoft MSRC – Patch Tuesday: vulnerabilities, severity, updates
- PoC-in-GitHub – public proof-of-concept repositories
- Metasploit (Rapid7) – modules of the Metasploit Framework
- Exploit-DB (OffSec) – archive of public exploits (links only)
- Patch days: official vendor pages (linked per vendor) (Vendor patch days)
This product uses data from the NVD API but is not endorsed or certified by the NVD. EPSS data © FIRST.org.
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