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OpenAdvisories
High · 7.5 CVE-2026-90869 EUVD-2026-113026GHSA-47x4-grc2-rh4m

Pre-Authentication SSH Denial of Service via Malformed Public-Key Signature in Progress WS_FTP Server

Published Oct 29, 2026 · Updated Oct 30, 2026 · Assigned by ProgressSoftware

Vendor: Progress Software Product: WS_FTP Server

Description

A remote attacker who knows a valid account's enrolled SSH public key can terminate the shared SSH service in Progress Software WS_FTP Server versions prior to 2024.0.7 and 2025.0.4 on Windows.

Affected products

VendorProductAffectedFixed
Progress Software WS_FTP Server < 2024.0.7, < 2025.0.4 2024.0.7

Advisories 1

References