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CVE-2025-50615: Buffer Overflow Vulnerability in Netis WF2880 v2.1.40207 Leading to DoS Attack

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Overview

This report discusses the critical buffer overflow vulnerability, CVE-2025-50615, discovered in Netis WF2880 v2.1.40207. This vulnerability is particularly worrisome due to its potential to lead to a Denial of Service (DoS) attack and compromise the system, posing a significant threat to system stability and data security.

Vulnerability Summary

CVE ID: CVE-2025-50615
Severity: High (CVSS: 7.5)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: System compromise and potential 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_00470c50 function of the cgitest.cgi file in Netis WF2880 v2.1.40207. By controlling the value of wl_mac_filter_set in the payload, the attackers can overload the buffer, causing the software to crash. This crash can trigger a Denial of Service attack, potentially compromising the system and leading to data leakage.

Conceptual Example Code

Below is a conceptual example of how the vulnerability might be exploited. This represents a malicious HTTP POST request that could be used to trigger the vulnerability:

POST /cgitest.cgi HTTP/1.1
Host: target.example.com
Content-Type: application/json
{ "wl_mac_filter_set": "malicious_payload" }

Mitigation Guidance

To mitigate this vulnerability, the recommended course of action is to apply the patch provided by the vendor as soon as it becomes available. In the meantime, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can provide temporary mitigation.

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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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