Overview
This report discusses the CVE-2025-50609 vulnerability, a critical buffer overflow issue discovered in Netis WF2880 v2.1.40207. This vulnerability affects users of this version, posing a significant cybersecurity threat due to the potential for system compromise or leakage of sensitive data.
Vulnerability Summary
CVE ID: CVE-2025-50609
Severity: High (CVSS: 7.5)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise or data leakage
Affected Products
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Product | Affected Versions
Netis WF2880 | v2.1.40207
How the Exploit Works
The vulnerability is present in Function_00465620 of the cgitest.cgi file. Attackers can exploit this vulnerability by controlling the value of ‘specify_parame’ in the payload. This manipulation triggers a buffer overflow condition leading to a program crash, which can potentially lead to a Denial of Service (DoS) attack or even system compromise if properly chained with other exploits.
Conceptual Example Code
Below is a conceptual example of how the vulnerability might be exploited using a malicious HTTP POST request:
POST /cgitest.cgi HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
specify_parame=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...In the above example, the `specify_parame` parameter value is overflowed with ‘A’ characters, causing the buffer overflow.
Mitigation
Users are advised to apply the patch provided by the vendor as soon as possible. In the meantime, Web Application Firewalls (WAF) or Intrusion Detection Systems (IDS) can be used to detect and prevent attempts to exploit this vulnerability.
