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.
