Description
A path traversal vulnerability in Progress Software WS_FTP Server versions prior to 2024.0.7 and 2025.0.4 on Windows could allow a delegated Host Administrator to access locations outside their authorized scope, potentially enabling remote code execution.
Published: 2026-10-29
Score: 9.1 Critical
EPSS: n/a
KEV: No
Impact: Remote code execution via path traversal
Action: Patch
AI Analysis

Impact

A path traversal flaw in Progress Software WS_FTP Server allows a delegated Host Administrator to reach files and directories outside their permitted virtual folder boundaries, potentially leading to remote code execution. The weakness is a classic directory traversal (CWE-22) combined with improper file type handling (CWE-434).

Affected Systems

Progress Software WS_FTP Server on Windows, with affected releases prior to 2024.0.7 and 2025.0.4.

Risk and Exploitability

The vulnerability carries a CVSS score of 9.1 and is not listed in the CISA KEV catalog. With EPSS data unavailable, the likelihood of exploitation remains unclear, but the high severity and possibility of executing arbitrary code make it a high‑risk issue. Attackers need delegated Host Administrator credentials to exploit the flaw, but once achieved, they can access sensitive data or execute code on the server.

Generated by OpenCVE AI on October 29, 2026 at 17:54 UTC.

Remediation

Vendor Workaround

Limit delegation of Host Administrator privileges to trusted staff, and periodically audit virtual folder physical paths to confirm they remain within their assigned host root. Contact Progress Software Technical Support for guidance on available mitigations.

OpenCVE Recommended Actions

  • Upgrade or patch the WS_FTP Server to version 2024.0.7 or later, or 2025.0.4 or later on Windows.
  • Restrict delegation of Host Administrator privileges to trusted personnel only.
  • Regularly audit virtual folder physical paths to ensure they remain confined within the designated host root.
  • Contact Progress Software Technical Support for additional guidance and mitigations.

Generated by OpenCVE AI on October 29, 2026 at 17:54 UTC.

Tracking

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Advisories

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History

Thu, 29 Oct 2026 16:00:00 +0000

Type Values Removed Values Added
Description A path traversal vulnerability in Progress Software WS_FTP Server versions prior to 2024.0.7 and 2025.0.4 on Windows could allow a delegated Host Administrator to access locations outside their authorized scope, potentially enabling remote code execution.
Title Virtual Folder Path Confinement Bypass in Progress WS_FTP Server
Weaknesses CWE-22
CWE-434
References
Metrics cvssV3_1

{'score': 9.1, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H'}

Subscriptions

No data.

cve-icon MITRE

Status: PUBLISHED

Assigner: ProgressSoftware

Published:

Updated: 2026-10-29T15:52:24.790Z

Reserved: 2026-09-14T06:09:55.847Z

Link: CVE-2026-90866

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-29T16:20:04.690

Modified: 2026-10-29T16:24:53.840

Link: CVE-2026-90866

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-10-29T18:00:17Z

Weaknesses
  • CWE-22

    Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal')

  • CWE-434

    Unrestricted Upload of File with Dangerous Type