Critical severity9.1NVD Advisory· Published Oct 29, 2026· Updated Oct 29, 2026

CVE-2026-90866

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 locations outside their authorized scope, potentially enabling remote code execution.

Patches

Vulnerability mechanics

References

progress.lightning.force.com/lightning/r/Knowledge__kav/ka7Pb000001vl86IAA/viewnvd

News mentions

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