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CVE-2025-6162: Critical Buffer Overflow Vulnerability in TOTOLINK EX1200T HTTP POST Request Handler

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Overview

The cybersecurity community has identified a critical vulnerability in TOTOLINK EX1200T version 4.1.2cu.5232_B20210713, a widely used software. This vulnerability, tagged CVE-2025-6162, poses a significant risk as it can be exploited remotely, potentially compromising systems and leading to data leakage. Given the severity of the vulnerability and its potential impact, it is crucial to understand and mitigate it swiftly.

Vulnerability Summary

CVE ID: CVE-2025-6162
Severity: Critical (CVSS: 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 EX1200T | 4.1.2cu.5232_B20210713

How the Exploit Works

The vulnerability resides within an unknown functionality of the file /boafrm/formMultiAP, a component of the HTTP POST Request Handler. The argument ‘submit-url’ within the HTTP POST Request can be manipulated, leading to a buffer overflow. This overflow condition can be exploited by a remote attacker to execute arbitrary code on the system, potentially compromising the system or causing data leakage.

Conceptual Example Code

The following is a conceptual HTTP POST request that might be used to exploit the vulnerability:

POST /boafrm/formMultiAP HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
submit-url=http://malicious.example.com

In this example, the ‘submit-url’ argument is manipulated to point to a malicious URL. When processed by the vulnerable system, it could lead to a buffer overflow, thereby compromising the system.

Mitigation Guidance

Immediate action is required to mitigate the risk posed by this vulnerability. Users of the affected versions of TOTOLINK EX1200T should apply the vendor-provided patch as soon as possible. If the patch cannot be applied immediately, using a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) can serve as a temporary mitigation measure. However, these are not long-term solutions and can only limit the potential damage. Therefore, it is still highly recommended to apply the patch for a comprehensive solution.

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Disclaimer:

The information and code presented in this article are provided for educational and defensive cybersecurity purposes only. Any conceptual or pseudocode examples are simplified representations intended to raise awareness and promote secure development and system configuration practices.

Do not use this information to attempt unauthorized access or exploit vulnerabilities on systems that you do not own or have explicit permission to test.

Ameeba and its authors do not endorse or condone malicious behavior and are not responsible for misuse of the content. Always follow ethical hacking guidelines, responsible disclosure practices, and local laws.

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