Host Administrator Path Containment Bypass in Progress WS_FTP Server

MITRE NVD CVE.ORG JSON API

Summary

CVECVE-2026-90864
StatePUBLISHED
AssignerProgressSoftware
Source PriorityCVE Program / NVD first with legacy fallback
Published2026-10-29 16:20:04 UTC
Updated2026-10-30 18:18:16 UTC
DescriptionA 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.

Risk And Classification

Primary CVSS: v3.1 9.1 CRITICAL from [email protected]

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Problem Types: CWE-22 | CWE-434 | CWE-22 CWE-22: Improper Limitation of a Pathname to a Restricted Directory ('Path Traversal') | CWE-434 CWE-434: Unrestricted Upload of File with Dangerous Type

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary9.1CRITICALCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
3.1CNACVSS9.1CRITICALCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

CVSS v3.1 Breakdown

Attack Vector
Network
Attack Complexity
Low
Privileges Required
High
User Interaction
None
Scope
Changed
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Progress Software WS FTP Server affected 2024.0.7 custom Windows
CNA Progress Software WS FTP Server affected 2025.0.4 custom Windows

References

ReferenceSourceLinkTags
progress.lightning.force.com/lightning/r/Knowledge__kav/ka7Pb000001vl86IAA/view [email protected] progress.lightning.force.com
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis

Additional Advisory Data

Workarounds

CNA: 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.

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