by Kastro
Paper/Archive/CVE-2026-90866

CVE-2026-90866

Progress Software WS_FTP Server — Virtual Folder Path Confinement Bypass in Progress WS_FTP Server

CVSS 9.1
critical.is priorityof 100
27
CVSS 9.1 (CNA)9.1 / 10 × 3027.3Not in CISA KEV+300.0No EPSS score.000 × 200.0No public exploit+100.0SSVC exploitation: none+100.0
Description · from the CVE record

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.

Affected

ProductAffectedFixed inSource
WS_FTP Server< 2024.0.72024.0.7CNA
WS_FTP Server< 2025.0.42025.0.4CNA

Scores by source

ProgressSoftware (CNA)9.1CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H
CISA ADPSSVCExploitation: none · Automatable: no · Technical impact: total

References

advisoryprogress.lightning.force.com/lightning/r/Knowledge__kav/ka7Pb000001vl86IAA/view