TI-2026-82615 Aliases CVE-2026-90870 GHSA-cq7f-79v2-gg46

Unauthenticated resource exhaustion in Progress WS_FTP Server

LOW 30CWE-400Published 2026-10-29 · Updated 2026-10-30

Key facts

Attack vector: Network
Privileges required: None
User interaction: None
Attack complexity: Low
Impact type: Denial of service
Confidentiality · integrity · availability: None · None · Low
Fix status: Fixed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-400.

Summary

Progress Software WS_FTP Server versions before 2024.0.7 and before 2025.0.4 on Windows are affected. The Ad Hoc Transfer component does not release backend receiver sessions after use, a flaw classified as CWE-772. A remote attacker without authentication can exhaust server resources and degrade the service.

Written with Claude Haiku 5.5 from the sources below · 2026-10-30

Description from the CNA

A missing release of backend receiver sessions in the Ad Hoc Transfer component of Progress Software WS_FTP Server versions prior to 2024.0.7 and 2025.0.4 on Windows could lead to server resource exhaustion and service degradation.

Why it matters now

Exploitation None reported CISA SSVC · not in CISA KEV

EPSS 0.0027 19th percentileScored 2026-11-07

Fix Fixed WS_FTP Server (Progress Software): 2024.0.7, 2025.0.4

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: None
Automatable: Yes
Technical impact: Partial

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
Progress	WS_FTP Server	before 2024.0.7; before 2025.0.4	2024.0.7, 2025.0.4	Patch available	CNA

WS_FTP Server VendorProgress Affected before 2024.0.7; before 2025.0.4 Fixed in 2024.0.7, 2025.0.4 Patch available CNA

CPE names Threatist (inferred) · 1

Inferred from how NVD named this product before; not given by a source.

CPE	Versions	Role	Vendor
cpe:2.3:a:progress:ws_ftp_server::::::::	—	—	Progress

cpe:2.3:a:progress:ws_ftp_server:*:*:*:*:*:*:*:* Versions — — ·Progress

Remediation

Upgrade Progress WS_FTP Server to fixed version 2024.0.7 or 2025.0.4.

Written with Claude Haiku 5.5 from the sources below · 2026-10-30

Fix · CNA WS_FTP Server (Progress Software) Fixed in 2024.0.7, 2025.0.4

Fixed in the same release

Records fixed by the same vendor advisory or release, as the CNA lists them.

Advisory · 2026-10-29
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
Show all 15 records → Advisory →

Timeline

2026-10-29 Threatist record created from CVE-2026-90870
2026-10-29 Alias added: GHSA-cq7f-79v2-gg46
2026-10-30 CISA SSVC decision points changed

References

Advisory 1

https://progress.lightning.force.com/lightning/r/Knowledge__kav/ka7Pb000001vl86IAA/view

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

See all 436 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences