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CVE-2025-10792: Critical Buffer Overflow Vulnerability in D-Link DIR-513 A1FW110

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Overview

In today’s digital era, the security of data and systems is paramount. This blog post details a newly discovered critical vulnerability (CVE-2025-10792) that affects the D-Link DIR-513 A1FW110. D-Link is a widely used brand, and the vulnerability in question has the potential to compromise the system or lead to data leakage, putting at risk a vast number of users worldwide. This vulnerability becomes even more significant as it affects a product that is no longer supported by the maintainer, making the application of a vendor patch impossible.

Vulnerability Summary

CVE ID: CVE-2025-10792
Severity: Critical (8.8)
Attack Vector: Remote
Privileges Required: None
User Interaction: None
Impact: Potential system compromise or data leakage

Affected Products

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Product | Affected Versions

D-Link DIR-513 A1FW110 | All versions

How the Exploit Works

The vulnerability resides in an unknown function of the file /goform/formWPS. A remote attacker can manipulate the argument, ‘webpage,’ leading to a buffer overflow condition. A buffer overflow is a situation where a program, while writing data to a buffer, overruns the buffer’s boundary and overwrites adjacent memory locations. This can result in erratic program behavior, including memory access errors, incorrect results, a crash, or a breach of system security.

Conceptual Example Code

Below is a conceptual example of how the vulnerability might be exploited. This is not a real exploit, but rather a hypothetical representation of how a malicious request could be structured.

POST /goform/formWPS HTTP/1.1
Host: vulnerable-router.example.com
Content-Type: application/x-www-form-urlencoded
webpage=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...

In this example, the ‘webpage’ parameter is flooded with ‘A’ characters, causing a buffer overflow on the server.

Remediation

As the affected product is no longer supported by the maintainer, applying a vendor patch is not an option. Therefore, it is recommended to implement a Web Application Firewall (WAF) or Intrusion Detection System (IDS) as a temporary mitigation measure. These systems can help detect and prevent potential exploits. Additionally, users are advised to upgrade to a supported product version or switch to a different product with active support and regular security updates.

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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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