---
id: CVE-2026-90862
title: >-
  Web Transfer Module Multi-Factor Authentication Bypass in Progress WS_FTP
  Server
summary: >-
  Improper authentication in the Web Transfer Module of Progress Software WS_FTP
  Server versions prior to 2024.0.7 and 2025.0.4 on Windows could allow an
  attacker with a user’s password to access certain files associated with that
  account …
severity: medium
cvss: 4.3
cvssVector: 'CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:L/I:N/A:N'
cvssSource: cna
cwe:
  - CWE-287
  - CWE-308
vendor: Progress Software
product: WS_FTP Server
affected:
  - ws_ftp_server < 2024.0.7
  - ws_ftp_server < 2025.0.4
ssvc:
  exploitation: none
  automatable: 'no'
  technicalImpact: partial
  timestamp: '2026-10-30T17:13:52.462395Z'
published: '2026-10-29'
updated: '2026-10-30'
sourceUpdated: '2026-10-30T17:14:03.885Z'
source: CVEORG
sourceUrl: 'https://www.cve.org/CVERecord?id=CVE-2026-90862'
references:
  - url: >-
      https://progress.lightning.force.com/lightning/r/Knowledge__kav/ka7Pb000001vl86IAA/view
tags:
  - cve.org
epss: 0.00222
epssPercentile: 0.12886
ingestedAt: '2026-11-05T16:24:31.146Z'
---

## Overview

Improper authentication in the Web Transfer Module of Progress Software WS_FTP Server versions prior to 2024.0.7 and 2025.0.4 on Windows could allow an attacker with a user’s password to access certain files associated with that account without satisfying multi-factor authentication requirements.

## Affected

- `ws_ftp_server < 2024.0.7`
- `ws_ftp_server < 2025.0.4`

## Remediation

Refer to the linked advisories for vendor-supplied fixes and affected version ranges.

### Workarounds

Restrict Web Transfer Module access to trusted networks and users, and disable Web Transfer functionality if it is not required. Contact Progress Software Technical Support for guidance on available mitigations.