Path traversal in Progress WS_FTP Server Ad Hoc Transfer exposes files
Key facts
- Attack vector
- Network
- Privileges required
- Low
- User interaction
- None
- Attack complexity
- Low
- Impact type
- Information disclosure
- Confidentiality · integrity · availability
- High · None · None
- Fix status
- Fixed
Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-22 and the CVSS impact.
Summary
Progress Software WS_FTP Server versions before 2024.0.6 and before 2025.0.3 on Windows contain an improper limitation of a pathname to a restricted directory (CWE-22) in the Ad Hoc Transfer component. An authenticated user with low privileges can access files outside the intended directories over the network, with a scope change that exposes confidential data.
Written with Claude Haiku 5.5 from the sources below · 2026-11-05
Description from the CNA
Improper limitation of pathname in the Ad Hoc Transfer component of Progress Software WS_FTP Server versions prior to 2024.0.6 and 2025.0.3 on Windows could allow an authenticated user to access files outside intended directories.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- No
- Technical impact
- Partial
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
Upgrade WS_FTP Server to version 2024.0.6 or 2025.0.3, which fix the flaw.
Written with Claude Haiku 5.5 from the sources below · 2026-11-05
- Fix · CNA WS_FTP Server (Progress Software) Fixed in 2024.0.6, 2025.0.3
Fixed in the same release
Records fixed by the same vendor advisory or release, as the CNA lists them.
- Advisory ·
Progress Software WS_FTP Server — progress.lightning.force.com/lightning/r/Knowledge__kav/ka7…
15 records Highest priority Priority MEDIUM 6 MEDIUM, 9 LOW
Other records, highest priority first
- TI-2026-82604 Improper authentication in Progress WS_FTP Server exposes credentialsPriority MEDIUM 50
- TI-2026-82613 OS command injection in Progress WS_FTP ServerPriority MEDIUM 46
- TI-2026-82611 Path traversal in Progress WS_FTP Server lets Host Administrators escape scopePriority MEDIUM 43
Timeline
- 2026-10-29 Threatist record created from CVE-2026-84294
- 2026-10-29 Alias added: GHSA-qphh-2fw4-cg95
- 2026-10-31 Priority changed: MEDIUM → LOW
- 2026-11-05 CISA SSVC decision points changed
References
More Progress vulnerabilities
- TI-2026-07083 Command injection in Progress LoadMaster KEVCVSS 3.1CRITICAL 9.8
- TI-2024-06182 WhatsUp Gold HasErrors SQL Injection Authentication Bypass Vulnerability KEVCVSS 3.1CRITICAL 9.8
- TI-2024-04541 WhatsUp Gold GetFileWithoutZip Directory Traversal Remote Code Execution Vulnerability KEVCVSS 3.1CRITICAL 9.8
- TI-2024-04060 Registration Authentication Bypass Vulnerability KEVCVSS 3.1CRITICAL 9.8
- TI-2024-01127 LoadMaster Pre-Authenticated OS Command Injection KEVCVSS 3.1CRITICAL 10.0
- TI-2023-20934 WS_FTP Server Ad Hoc Transfer Module .NET Deserialization Vulnerability KEVCVSS 3.1CRITICAL 10.0
Sources
- CVE-2026-84294 · CVE Program
- CVE-2026-84294 · NVD
- FIRST EPSS
- GHSA-qphh-2fw4-cg95 · GitHub Advisory Database · CC BY 4.0
This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences