---
title: "CVE-2026-90863: Progress Software WS_FTP Server - Broken Access Control"
description: "Progress Software WS_FTP Server < 2024.0.7 and < 2025.0.4 on Windows contains a broken access control caused by missing authorization in the administrative interface, letting delegated Host Administrators execute arbitrary commands with elevated privileges, exploit requires delegated Host Administrator access."
url: https://panop.io/threat-heartbeat/CVE-2026-90863/
---

# CVE-2026-90863 Progress Software WS\_FTP Server - Broken Access Control

Progress Software WS\_FTP Server < 2024.0.7 and < 2025.0.4 on Windows contains a broken access control caused by missing authorization in the administrative interface, letting delegated Host Administrators execute arbitrary commands with elevated privileges, exploit requires delegated Host Administrator access.

CVSS base score 9.1 /10

Critical

CISA KEV

Not listed

Public exploit

None known

Authentication

Required

EPSS

0.66% chance of exploitation in 30 days

[View the NVD record ↗](https://nvd.nist.gov/vuln/detail/CVE-2026-90863)

## Details

Type

Broken Access Control

Impact

Remote Code Execution, Privilege Escalation

CVSS vector

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

Published

29 October 2026

Updated

31 October 2026

Weakness

[CWE-862](https://cwe.mitre.org/data/definitions/862.html)

## Vendor fix

Upgrade to versions 2024.0.7 or 2025.0.4 or later.

Patching closes this CVE. It does not tell you which of your systems run the affected version, or what else is exposed alongside them.

## References

- [https://nvd.nist.gov/vuln/detail/CVE-2026-90863](https://nvd.nist.gov/vuln/detail/CVE-2026-90863)
- [https://progress.lightning.force.com/lightning/r/Knowledge\_\_kav/ka7Pb000001vl86IAA/view](https://progress.lightning.force.com/lightning/r/Knowledge__kav/ka7Pb000001vl86IAA/view)

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## What this record can't tell you

- Whether you run the affected software, and where
- Whether an attacker can actually reach and exploit it
- The misconfigurations that never get a CVE number
- What it would cost the business, ranked into what to fix first

Panop answers these inside your environment, for this CVE and every other finding.

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