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.
