by Kastro
Paper/Archive/CVE-2026-90863

CVE-2026-90863

Progress Software WS_FTP Server — Privilege Escalation via Missing Authorization in WS_FTP Manager

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

Missing authorization in the administrative interface of Progress Software WS_FTP Server versions prior to 2024.0.7 and 2025.0.4 on Windows could allow a delegated Host Administrator to exceed their authorized scope, potentially enabling arbitrary command execution with elevated privileges and complete compromise of the underlying server.

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