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CVE-2025-60662: Stack Overflow Vulnerability in Tenda AC18 V15.03.05.19

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Overview

The CVE-2025-60662 pertains to a critical security vulnerability identified in the Tenda AC18 V15.03.05.19. This vulnerability, specifically a stack overflow, is potentially exploitable by malicious actors to compromise the system or leak sensitive data. Being a prevalent device in many network infrastructures, this vulnerability could have widespread implications if left unpatched.

Vulnerability Summary

CVE ID: CVE-2025-60662
Severity: High (7.5 CVSS Score)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: The successful exploit could lead to system compromise and data leakage

Affected Products

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Product | Affected Versions

Tenda AC18 | V15.03.05.19

How the Exploit Works

The vulnerability arises from a stack overflow in the ‘fromAdvSetMacMtuWan’ function, where the ‘wanSpeed’ parameter is mishandled. A malicious actor could exploit this vulnerability by sending a specially crafted request that contains an excessively long ‘wanSpeed’ value. This would cause a buffer overflow, allowing an attacker to execute arbitrary code or disrupt system operations.

Conceptual Example Code

The following is a hypothetical example of how the vulnerability might be exploited. This is a sample HTTP request that sends a malicious payload to trigger the stack overflow.

POST /fromAdvSetMacMtuWan HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
wanSpeed=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA... [continue until buffer overflow]

Please note that this is a conceptual example and does not represent actual exploit code.

Mitigation Guidance

Tenda has released a patch to fix this vulnerability. All users are strongly advised to update their Tenda AC18 firmware to the latest version as soon as possible. In the meantime, users might consider deploying a Web Application Firewall (WAF) or Intrusion Detection System (IDS) as a temporary mitigation measure to detect and block attempted exploits of this vulnerability.

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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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