Overview

The vulnerability labeled as CVE-2025-10034 is a critical security flaw found in the D-Link DIR-825 version 1.08.01, a popular router model that is unfortunately no longer supported by its manufacturer. This vulnerability affects the get_ping6_app_stat function in the ping6_response.cg file of the httpd component, leading to a buffer overflow issue when there is a manipulation of the ping6_ipaddr argument. Since the vulnerability has been publicly disclosed, it poses a significant risk to any system still using the affected product, as it could lead to potential system compromise or data leakage.

Vulnerability Summary

CVE ID: CVE-2025-10034
Severity: High (8.8 CVSS Score)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise and data leakage

Affected Products

Product | Affected Versions

D-Link DIR-825 | 1.08.01

How the Exploit Works

The vulnerability works by manipulating the ping6_ipaddr argument in the get_ping6_app_stat function of the ping6_response.cg file. This manipulation results in a buffer overflow, a condition where a program attempts to put more data in a buffer than it can hold. This overflow can overwrite adjacent memory locations and in doing so, an attacker could execute arbitrary code, cause a system crash, or even gain unauthorized access to the system.

Conceptual Example Code

In a conceptual scenario, an attacker could exploit this vulnerability by sending a crafted HTTP request to the target router, containing an overly large and malicious ‘ping6_ipaddr’ value. The example below illustrates this scenario:

POST /ping6_response.cg HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
ping6_ipaddr=[Insert malicious oversized data here]

This payload would trigger a buffer overflow in the get_ping6_app_stat function, potentially leading to arbitrary code execution, a system crash, or unauthorized system access.
Please note that the actual payload would depend on multiple factors such as the target system’s architecture, the specific binary versions in use, and other factors. This example is conceptual and not intended to be used as an actual exploit.

Mitigation Guidance

Users are strongly advised to apply vendor-provided patches to address this vulnerability. In case the patches are not available, consider using Web Application Firewalls (WAFs) or Intrusion Detection Systems (IDS) as temporary mitigation measures. It is also recommended to consider switching to a supported product to ensure you receive future security updates.