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 or modify files outside their authorized scope.
Published: 2026-10-29
Score: 9.1 Critical
EPSS: n/a
KEV: No
Impact: Unauthorized File Access
Action: Immediate Patch
AI Analysis

Impact

The vulnerability is a path traversal flaw in Progress Software WS_FTP Server that lets a delegated Host Administrator reach or modify files beyond their intended scope. This enables unauthorized file access and alters the integrity of the server’s filesystem, potentially allowing attackers to read sensitive data or tamper with server configurations. The flaw maps to the Common Weakness Enumerations CWE-22 and CWE-434.

Affected Systems

The issue affects Progress Software WS_FTP Server versions earlier than 2024.0.7 and 2025.0.4 running on Windows. These versions expose the server to the path traversal condition through their FTP interface, making any user who holds delegated Host Administrator rights vulnerable.

Risk and Exploitability

The vulnerability carries a CVSS score of 9.1, indicating critical severity, and it is not currently listed in the CISA Known Exploited Vulnerabilities catalog. The EPSS score is not available, so current exploit probability is unknown, but the critical score suggests a high likelihood of exploitation in a relevant environment. The attack vector is inferred to be an authenticated Host Administrator user with delegated privileges who can interact with the FTP service to manipulate file paths.

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

Remediation

Vendor Workaround

Limit delegated administrative privileges to trusted personnel. Review folder configurations and account permissions to ensure access remains within authorized boundaries. Contact Progress Software Technical Support for guidance on available mitigations.

OpenCVE Recommended Actions

  • Apply the Progress Software patch that updates WS_FTP Server to version 2024.0.7 or later versions that include the fix.
  • Limit delegated administrative privileges to trusted personnel only.
  • Review and tighten folder configurations and account permissions so that access remains within the intended boundaries.
  • Contact Progress Software Technical Support for guidance on available mitigations if a patch cannot be applied immediately.

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 or modify files outside their authorized scope.
Title Host Administrator Path Containment 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: 2026-10-29T15:50:29.084Z

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

Link: CVE-2026-90864

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-10-29T16:20:04.453

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

Link: CVE-2026-90864

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