Overview
CVE-2025-8131 is an identified vulnerability found in Tenda AC20 16.03.08.05. This issue has been categorized as critical due to its potential to compromise systems or lead to data leakage. The vulnerability affects an unidentified functionality of the file /goform/SetStaticRouteCfg, where the manipulation of the argument list triggers a stack-based buffer overflow. This kind of attack can be remotely executed and the exploit details are already disclosed to the public, making it a critical concern for users of the affected device.
The severity of this vulnerability underscores the need for immediate action by Tenda AC20 users. If exploited successfully, cybercriminals can compromise systems, gain unauthorized access to sensitive data, and disrupt operations. Therefore, it’s vital to understand the nature of this vulnerability, its impact, and how to mitigate it.
Vulnerability Summary
CVE ID: CVE-2025-8131
Severity: Critical (8.8 CVSS Score)
Attack Vector: Remote
Privileges Required: None
User Interaction: None
Impact: Potential system compromise or data leakage
Affected Products
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Product | Affected Versions
Tenda AC20 | 16.03.08.05
How the Exploit Works
The exploit takes advantage of an unknown function within the /goform/SetStaticRouteCfg file. By manipulating the argument list, an attacker can trigger a stack-based buffer overflow. This overflow can then overwrite critical memory areas, potentially allowing the attacker to execute arbitrary code on the system.
Conceptual Example Code
Below is a conceptual example of a malicious HTTP request that could potentially exploit this vulnerability:
POST /goform/SetStaticRouteCfg HTTP/1.1
Host: target.example.com
Content-Type: application/json
{
"argument_list": "A"*5000
}In this example, a POST request is made to the vulnerable endpoint with an overly large “argument_list”. This could trigger the buffer overflow, potentially leading to unauthorized code execution or system compromise.
Mitigation Guidance
Users are recommended to immediately apply the vendor patch once it is available. In the interim, deploying a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can provide temporary mitigation against potential attacks exploiting this vulnerability. Regularly updating and patching systems can significantly reduce the risk of such vulnerabilities being exploited.