Overview
A critical security vulnerability, identified as CVE-2025-6165, has been detected in TOTOLINK X15 version 1.0.0-B20230714.1105. This vulnerability, residing in the HTTP POST Request Handler, specifically affects the file /boafrm/formTmultiAP. The manipulation of the argument ‘submit-url’ leads to a buffer overflow, opening a door for potential attackers to compromise the system or leak sensitive data.
As the exploit is now publicly disclosed, it is essential for organizations using the affected products to understand the implications and promptly apply the necessary countermeasures to protect their systems and data.
Vulnerability Summary
CVE ID: CVE-2025-6165
Severity: Critical (CVSS score 8.8)
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
TOTOLINK X15 | 1.0.0-B20230714.1105
How the Exploit Works
The vulnerability exposes the system to a buffer overflow attack, caused by improper input validation of the ‘submit-url’ argument in the HTTP POST Request Handler of the affected file. Attackers can manipulate this argument with specially crafted input, causing the system to allocate inadequate buffer space. This overflow of data can overwrite other memory areas, leading to potential unauthorized code execution or information disclosure.
Conceptual Example Code
Here is a conceptual example of how the vulnerability might be exploited, using an HTTP POST request. Please note this is a hypothetical example and does not contain actual malicious code:
POST /boafrm/formTmultiAP HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
submit-url=VERY_LONG_STRING_THAT_CAUSES_BUFFER_OVERFLOWIn the above sample, the ‘submit-url’ argument is filled with an excessively long string, causing a buffer overflow in the system. This could potentially allow an attacker to execute arbitrary code or access sensitive data.
Recommended Mitigation
Users of the affected TOTOLINK X15 version are strongly advised to apply the vendor-provided patch as soon as possible to resolve this vulnerability. If the patch cannot be immediately applied, the use of a Web Application Firewall (WAF) or Intrusion Detection System (IDS) may serve as a temporary mitigation measure to detect and block attempts to exploit this vulnerability. However, these should not be seen as long-term solutions but as part of a layered security strategy.