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CVE-2025-55483: Buffer Overflow Vulnerability in Tenda AC6 V15.03.06.23_multi

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Overview

This report covers the critical vulnerability CVE-2025-55483 that affects Tenda AC6 V15.03.06.23_multi. This vulnerability is a buffer overflow error occurring in the function formSetMacFilterCfg via the parameters macFilterType and deviceList. Due to the severity of the vulnerability, it has the potential to compromise systems or result in significant data leakage.

Vulnerability Summary

CVE ID: CVE-2025-55483
Severity: High (CVSS: 7.5)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential System Compromise, Data Leakage

Affected Products

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Product | Affected Versions

Tenda AC6 | V15.03.06.23_multi

How the Exploit Works

The vulnerability is based upon a buffer overflow error. The software does not adequately validate input given in the macFilterType and deviceList parameters. If an attacker sends an unusually large amount of data to these parameters, they can overflow the buffer, causing the system to crash or, in some cases, allowing the attacker to execute arbitrary code or gain unauthorized access.

Conceptual Example Code

Here is a conceptual example of how the vulnerability might be exploited in a HTTP POST request:

POST /formSetMacFilterCfg HTTP/1.1
Host: target.example.com
Content-Type: application/json
{
"macFilterType": "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...",
"deviceList": "BBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBBB..."
}

In this example, “A” and “B” represent an overflow of data that exceeds the buffer’s capacity. The attacker floods the parameters with excessive data, causing the system to crash or potentially allowing the execution of arbitrary code.

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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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