Overview
CVE-2025-6402 is a critical security vulnerability discovered in TOTOLINK X15 version 1.0.0-B20230714.1105. This vulnerability is of particular concern due to its ability to be exploited remotely, potentially leading to system compromise or data leakage. As the exploit has been made public, the risk of exploitation is significantly increased, placing all users of the affected product version at risk. This vulnerability underscores the importance of regular software updates and security patch application.
Vulnerability Summary
CVE ID: CVE-2025-6402
Severity: Critical (8.8 CVSS score)
Attack Vector: Network (through HTTP POST Request Handler)
Privileges Required: None
User Interaction: None
Impact: Potential system compromise or data leakage
Affected Products
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Product | Affected Versions
TOTOLINK X15 | 1.0.0-B20230714.1105
How the Exploit Works
The vulnerability lies in the unknown code of the file /boafrm/formIpv6Setup of the HTTP POST Request Handler component. The manipulation of the ‘submit-url’ argument can lead to a buffer overflow condition. This condition is precipitated by an attacker sending specially crafted data in an HTTP POST request, which overruns the buffer, leading to memory corruption or even the execution of arbitrary code.
Conceptual Example Code
Below is a conceptual example of how the vulnerability might be exploited using an HTTP POST request:
POST /boafrm/formIpv6Setup HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
submit-url=malicious_payloadIn this example, the `submit-url` argument is manipulated with a ‘malicious_payload’ that could lead to buffer overflow.
Recommendations
The best course of action is to apply the vendor’s patch as soon as possible to mitigate this vulnerability. If the patch cannot be applied immediately, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as a temporary mitigation method. Regularly updating software and installing security patches promptly can protect systems from such vulnerabilities.