---
title: "W5500 and Vulnerable OS: HP-UX B.10.20"
url: "https://maker.wiznet.io/forum/15822"
markdown_url: "https://maker.wiznet.io/forum/15822/md"
type: "Forum topic"
category: "Ethernet Chips"
author: "gucheng"
created: "2025-08-01T16:50:43+09:00"
last_activity: "2025-08-04T13:01:29+09:00"
language: "en"
tags: ["W5500"]
views: 2
replies: 1
source: "WIZnet Makers forum (https://maker.wiznet.io/forum/)"
---

# W5500 and Vulnerable OS: HP-UX B.10.20

## Question

Asked by gucheng on 2025-08-01 in Ethernet Chips.

Hi Team,

we are using W5500 chips for TCP/IP application in our product. some audit firm scan find our product is running on Vulnerable OS: HP-UX B.10.20, but we are running on freeRTOS.

does W5500 TCP/IP stack share some code/library from OS: HP-UX B.10.20? please advise. thanks.

Best
Gu

## Replies

### Reply 1 by Lihan__, 2025-08-04

The W5500 is a chip with a built-in hardware TCP/IP protocol stack.
It does not contain an operating system, and there is no software code inside the chip.

The W5500 has no relation to HP-UX,
and it does not use any code or libraries from HP-UX B.10.20.

The identification of HP-UX by the security scanner is unrelated to the actual operation of the W5500,
and is a false result. The W5500 operates using an independent hardware-based TCP/IP stack.

Thank you.

---

Source: https://maker.wiznet.io/forum/15822