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CVE-2025-50614: Buffer Overflow Vulnerability in Netis WF2880 v2.1.40207

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Overview

The following report details a significant buffer overflow vulnerability discovered in Netis WF2880 v2.1.40207. This vulnerability, assigned the ID CVE-2025-50614, has the potential to impact any organization or individual utilizing this version of the Netis WF2880. Its exploitation can lead to a system crash, enabling a Denial of Service (DoS) attack and potentially compromising system security or leading to data leakage.

Vulnerability Summary

CVE ID: CVE-2025-50614
Severity: High (7.5 CVSS Score)
Attack Vector: Network
Privileges Required: None
User Interaction: No
Impact: Potential system compromise and data leakage

Affected Products

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Product | Affected Versions

Netis WF2880 | v2.1.40207

How the Exploit Works

The vulnerability resides in the FUN_0047151c function of the cgitest.cgi file. Attackers can exploit this vulnerability by sending a specially crafted payload that controls the value of the wds_set variable. This causes a buffer overflow, leading to a program crash. If maliciously executed, this could potentially enable a Denial of Service (DoS) attack, thereby compromising the system or leading to data leakage.

Conceptual Example Code

POST /cgitest.cgi HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
wds_set=OVERFLOW_VALUE

In the above conceptual example, the “OVERFLOW_VALUE” represents a payload that would cause a buffer overflow in the system.

Mitigation Guidance

Users of the affected product are advised to apply the vendor patch as soon as it becomes available. Until then, the use of Web Application Firewall (WAF) or Intrusion Detection Systems (IDS) can provide temporary mitigation. Additionally, it’s recommended to regularly monitor system logs for any unusual activity that could indicate an attempt to exploit this vulnerability.

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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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