CVE-2026-90863 Privilege Escalation via Missing Authorization in WS_FTP Manager

CriticalCVSS 9.1 EPSS 0.66%

Published: 2026-10-29 17:49
Updated: 2026-10-30 20:18
Exploit status: No public exploit known

Description

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 products

Product	Affected versions	Fixed in
Progress Software WS_FTP Server	< 2024.0.7	2024.0.7
Progress Software WS_FTP Server	< 2025.0.4	2025.0.4

References

progress.lightning.force.com vendor-advisory

CVSS v3.1

9.1 Critical

CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:H/A:H

Attack Vector: Network
Attack Complexity: Low
Privileges Required: High
User Interaction: None
Scope: Changed
Confidentiality: High
Integrity: High
Availability: High

All scores (2)

v3.1 9.1 · progresssoftware
v3.1 9.1 · security@progress.com

Weakness & likelihood

EPSS (exploitation probability, 30 days): 0.66% (percentile 51.9)
CWE: CWE-862 Missing Authorization CWE-915 Improperly Controlled Modification of Dynamically-Determined Object Attributes

Public exploit references

Metadata only. CVERadar never hosts or runs exploit code.

No public exploit references known.