EUVD-2025-16952

Comprehensive Technical Analysis of EUVD-2025-16952

1. Vulnerability Assessment and Severity Evaluation

The vulnerability EUVD-2025-16952 affects the D-Link DIR-816 router, specifically version 1.10CNB05. It is classified as critical with a CVSS Base Score of 9.3. This high score is due to several factors:

• Attack Vector (AV:N): The vulnerability can be exploited remotely over the network.
• Attack Complexity (AC:L): The attack requires low complexity, meaning it is relatively easy to exploit.
• Privileges Required (PR:N): No privileges are required to exploit this vulnerability.
• User Interaction (UI:N): No user interaction is needed for the attack to succeed.
• Confidentiality (VC:H), Integrity (VI:H), and Availability (VA:H): The vulnerability has a high impact on confidentiality, integrity, and availability.

The vulnerability involves a stack-based buffer overflow in the /goform/form2lansetup.cgi file, which can be triggered by manipulating the ip argument. This can lead to arbitrary code execution, potentially allowing an attacker to take control of the device.

2. Potential Attack Vectors and Exploitation Methods

Given the nature of the vulnerability, potential attack vectors include:

• Remote Exploitation: An attacker can send crafted HTTP requests to the vulnerable endpoint, causing a buffer overflow.
• Automated Scanning: Attackers may use automated tools to scan for vulnerable devices and exploit them en masse.
• Phishing and Social Engineering: Attackers could trick users into visiting malicious websites that exploit the vulnerability.

Exploitation methods may involve:

• Crafted HTTP Requests: Sending specially crafted HTTP requests to the /goform/form2lansetup.cgi endpoint with a manipulated ip parameter.
• Payload Delivery: Once the buffer overflow is triggered, attackers can deliver payloads to execute arbitrary code on the device.

3. Affected Systems and Software Versions

The vulnerability specifically affects:

• D-Link DIR-816 router
• Firmware version 1.10CNB05

It is important to note that this vulnerability only affects products that are no longer supported by the maintainer, which increases the risk as no official patches will be provided.

4. Recommended Mitigation Strategies

Given that the affected product is no longer supported, the following mitigation strategies are recommended:

• Upgrade or Replace: Users should consider upgrading to a supported model or replacing the device with a newer, supported model.
• Network Segmentation: Isolate the vulnerable device on a separate network segment to limit potential attack vectors.
• Firewall Rules: Implement strict firewall rules to block unauthorized access to the device.
• Monitoring and Logging: Enable comprehensive logging and monitoring to detect any suspicious activity.
• Regular Audits: Conduct regular security audits to identify and mitigate vulnerabilities in the network.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant risk to the European cybersecurity landscape, particularly for organizations and individuals using the affected D-Link DIR-816 router. The potential for remote exploitation and the lack of support from the manufacturer exacerbate the risk. This could lead to:

• Widespread Compromise: Attackers could exploit the vulnerability to compromise a large number of devices, leading to data breaches and loss of control over network infrastructure.
• Botnet Formation: Compromised devices could be used to form botnets, which can be used for further malicious activities such as DDoS attacks.
• Supply Chain Risks: Organizations relying on these devices for critical operations could face supply chain disruptions and potential data leaks.

6. Technical Details for Security Professionals

For security professionals, the following technical details are crucial:

• Vulnerable Endpoint: /goform/form2lansetup.cgi
• Vulnerable Parameter: ip
• Exploit Type: Stack-based buffer overflow
• Exploit Availability: The exploit has been disclosed to the public and may be used.
• References:
  • VulDB Entry
  • CTIID Entry
  • Submission Details
  • GitHub Repository
  • D-Link Official Website
  • NVD Entry

Security professionals should prioritize identifying and mitigating this vulnerability in their networks. Regular updates and patches for all network devices, along with continuous monitoring, are essential to maintain a robust security posture.

Conclusion

The vulnerability EUVD-2025-16952 in the D-Link DIR-816 router is critical and poses a significant risk to users. Immediate action is required to mitigate the risk, including upgrading or replacing the device, implementing network segmentation, and enhancing monitoring and logging capabilities. The European cybersecurity landscape must remain vigilant against such vulnerabilities to protect against potential large-scale attacks.