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CVE-2025-50608: Buffer Overflow Vulnerability in Netis WF2880 v2.1.40207

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Overview

A severe vulnerability has been discovered in Netis WF2880 v2.1.40207, specifically in the FUN_00471994 function of the cgitest.cgi file. This vulnerability, designated as CVE-2025-50608, can lead to a buffer overflow which could potentially crash the system, resulting in a Denial of Service (DoS) attack, and system compromise or data leakage. It’s crucial for users of this software to be aware of this vulnerability and apply the necessary mitigation strategies to prevent potential threats.

Vulnerability Summary

CVE ID: CVE-2025-50608
Severity: High (CVSS: 7.5)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: The successful exploitation of this vulnerability can lead to a system crash, potential Denial of Service (DoS) attack, and possible system compromise or data leakage.

Affected Products

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Product | Affected Versions

Netis WF2880 | v2.1.40207

How the Exploit Works

The exploit takes advantage of a buffer overflow vulnerability in the FUN_00471994 function of the cgitest.cgi file. In an attack scenario, the threat actor sends a specifically crafted payload that can control the value of ‘wl_base_set’. This causes the function to overflow the buffer, which can result in the system crashing and potentially leading to a Denial of Service (DoS) attack or data leakage.

Conceptual Example Code

The following is a hypothetical, conceptual example of how the vulnerability could be exploited. This example uses an HTTP POST request with a malicious payload:

POST /cgitest.cgi HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
wl_base_set=AAAAAAAAAAAAAAAAAAAA... // buffer overflow payload

This would cause the FUN_00471994 function to overflow its buffer, potentially leading to a system crash and allowing an attacker to execute a Denial of Service (DoS) attack or gain unauthorized access to the system.

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Disclaimer:

The information and code presented in this article are provided for educational and defensive cybersecurity purposes only. Any conceptual or pseudocode examples are simplified representations intended to raise awareness and promote secure development and system configuration practices.

Do not use this information to attempt unauthorized access or exploit vulnerabilities on systems that you do not own or have explicit permission to test.

Ameeba and its authors do not endorse or condone malicious behavior and are not responsible for misuse of the content. Always follow ethical hacking guidelines, responsible disclosure practices, and local laws.

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