Overview
This article covers the details of the critical cybersecurity vulnerability identified as CVE-2025-7194. This flaw affects D-Link DI-500WF 17.04.10A1T, a widely used networking device. The vulnerability resides in the function sprintf of the file ip_position.asp of the component jhttpd, leading to a stack-based buffer overflow when the ‘ip’ argument is improperly handled. As a cybersecurity professional, it’s critical to understand this vulnerability, as it allows for remote exploitation and could potentially lead to system compromise or data leakage.
Vulnerability Summary
CVE ID: CVE-2025-7194
Severity: Critical (CVSS: 8.8)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: System compromise, data leakage
Affected Products
Escape the Surveillance Era
Most apps won’t tell you the truth.
They’re part of the problem.
Phone numbers. Emails. Profiles. Logs.
It’s all fuel for surveillance.
Ameeba Chat gives you a way out.
- • No phone number
- • No email
- • No personal info
- • Anonymous aliases
- • End-to-end encrypted
Chat without a trace.
Product | Affected Versions
D-Link DI-500WF | 17.04.10A1T
How the Exploit Works
The vulnerability stems from improper handling of the ‘ip’ argument in the sprintf function within the file ip_position.asp of the jhttpd component. The sprintf function is used to store formatted data to a string. However, if an attacker sends an overly long ‘ip’ argument, it can overflow the stack buffer, causing it to overwrite adjacent memory. This condition, known as a stack-based buffer overflow, could allow an attacker to execute arbitrary code or cause the system to crash.
Conceptual Example Code
Here is a conceptual example of how the exploit might be executed:
POST /ip_position.asp HTTP/1.1
Host: target.example.com
Content-Type: application/json
{
"ip": "A string longer than the buffer..."
}In this example, the attacker sends a POST request with an ‘ip’ parameter that contains a string longer than the buffer allocated by the sprintf function in the ip_position.asp file. If the system is vulnerable, this will cause a buffer overflow, potentially leading to system compromise or data leakage.
Mitigation Guidance
Users are urged to apply the vendor-supplied patch as soon as possible to mitigate this vulnerability. If the patch cannot be applied immediately, using a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can provide temporary mitigation by detecting and blocking exploit attempts.