CVE-2026-90868: Progress Software WS_FTP Server OS command injection on Windows

CVE-2026-90868 · Severity: critical · CVSS 9.9 · Published 2026-10-29

WS_FTP Server is a file transfer server used by enterprises to securely exchange files across networks. An OS command injection vulnerability in certain Windows configurations could allow an attacker to execute arbitrary commands on the server, potentially leading to full system compromise and data theft.

Technologies: Progress Software WS FTP Server. Vendors: Progress Software.

Quick answers

Is CVE-2026-90868 exploited in the wild?
No. Junglewise Threat Intelligence has no report of CVE-2026-90868 being exploited in the wild.
How severe is CVE-2026-90868?
Critical severity, with a CVSS score of 9.9, published 29 October 2026.
Which products and versions are affected?
Progress Software WS FTP Server prior to 2024.0.7 and 2025.0.4 on Windows.
Is there a fix for CVE-2026-90868?
Yes: fixed in WS_FTP Server 2024.0.7, 2025.0.4. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
How is CVE-2026-90868 attacked?
It is attacked over the network, in a hosted service.
Am I affected by CVE-2026-90868?
Check whether you run Progress Software WS FTP Server at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.

How to fix

  • Fixed in: WS_FTP Server 2024.0.7, 2025.0.4

Technical details

An OS command injection vulnerability exists in Progress Software WS_FTP Server that can be exploited under certain configurations on Windows systems. The vulnerability allows arbitrary command execution, likely through improper input sanitization in a user-supplied parameter or configuration setting. A fix is available in versions 2024.0.7 and 2025.0.4.

Affected products

  • Progress Software WS_FTP Server prior to 2024.0.7 and 2025.0.4 on Windows

Timeline

  • 2026-10-29: disclosed

References

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