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CVE-2025-45513: Stack Overflow Vulnerability in Tenda FH451 V1.0.0.9

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Overview

In the ever-evolving landscape of cybersecurity, a new vulnerability has been identified in Tenda FH451 V1.0.0.9, assigned the Common Vulnerabilities and Exposures (CVE) identifier CVE-2025-45513. Tenda is a popular brand for networking devices, and the affected version of this router is widely used, making this vulnerability one of significant concern.
This flaw is a stack overflow vulnerability found in the P2pListFilter function. If exploited, the vulnerability could lead to potential system compromise and data leakage. In an era where data privacy and security are paramount, such a flaw can pose serious risks to both individuals and organizations alike.

Vulnerability Summary

CVE ID: CVE-2025-45513
Severity: Critical (Score: 9.8)
Attack Vector: Network
Privileges Required: None
User Interaction: Not required
Impact: System compromise and potential data leakage

Affected Products

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Product | Affected Versions

Tenda FH451 | V1.0.0.9

How the Exploit Works

This exploit works by taking advantage of a stack overflow vulnerability within the P2pListFilter function of the Tenda FH451 V1.0.0.9 router. In essence, this means that an attacker can send more data than what the function can handle, causing the system to overflow. This overflow can then be manipulated by an attacker to execute arbitrary code or possibly even take control of the system.

Conceptual Example Code

A conceptual representation of an exploit for this vulnerability could be a packet that contains more data than what the function can handle. This is represented below:

POST /P2pListFilter HTTP/1.1
Host: tenda.router
Content-Type: application/octet-stream
{ "p2p_list_data": "AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA..." }

In this example, the “p2p_list_data” field contains more data (represented by “A”s) than the function can handle, causing a stack overflow. This can then be leveraged by an attacker to perform various malicious activities.

Mitigation Guidance

Until a patch is released by the vendor, a potential mitigation strategy for this vulnerability is the use of a Web Application Firewall (WAF) or an Intrusion Detection System (IDS). These systems can detect and block malicious packets thus preventing the exploit. However, these are only temporary solutions and it is highly recommended to apply the vendor’s patch as soon as it is available to effectively secure your system against 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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