---
id: "CVE-2026-84295"
kind: "vulnerability"
aliases: ["CVE-2026-84295"]
title: "WS_FTP Server: improper authentication exposes admin credentials to unauthenticated attackers"
severity: "critical"
cvss: 10.0
epss: null
exploited: false
status: "open"
category: "infrastructure"
products: []
ecosystems: []
tags: ["file-transfer", "infrastructure", "self-hosted", "windows", "ws_ftp"]
not_affected_if: ["not-windows", "patched-version"]
published_at: "2026-10-29T16:19:29+00:00"
first_seen_at: "2026-10-29T16:26:01+00:00"
updated_at: "2026-10-29T16:27:07+00:00"
sources: [{"source": "nvd", "url": "https://nvd.nist.gov/vuln/detail/CVE-2026-84295", "first_seen_at": "2026-10-29T16:26:01+00:00"}]
---

# WS_FTP Server: improper authentication exposes admin credentials to unauthenticated attackers

WS_FTP Server on Windows, before versions 2024.0.6 and 2025.0.3, has an authentication flaw. An unauthenticated remote attacker can read sensitive information, including administrative credentials.

_Summary, check and fix written by a model from the sources; labelled as such._

## How to check

- Check the installed WS_FTP Server version in the product's About or version info, and compare it with `2024.0.6` and `2025.0.3`
- Confirm the server runs on Windows, since the sources name Windows specifically

## Fix

- Upgrade WS_FTP Server to `2024.0.6` or later on the 2024 line
- Upgrade WS_FTP Server to `2025.0.3` or later on the 2025 line

## Timeline

- 2026-10-29T16:26:01+00:00 nvd https://nvd.nist.gov/vuln/detail/CVE-2026-84295

## From the sources

Improper authentication in Progress Software WS_FTP Server versions prior to 2024.0.6 and 2025.0.3 on Windows could allow an unauthenticated remote attacker to access sensitive information, including administrative credentials.

---

_Free to read at a human pace. An API with keys and an MCP server are in preparation; early access: hello@infrastack.ai_