EUVD-2025-24818

Comprehensive Technical Analysis of EUVD-2025-24818

1. Vulnerability Assessment and Severity Evaluation

The vulnerability described in EUVD-2025-24818 affects KuWFi GC111 devices, specifically those with Hardware Version CPE-LM321_V3.2 and Software Version GC111-GL-LM321_V3.0_20191211. The issue allows unauthenticated attackers to execute arbitrary OS commands with root privileges via a crafted POST request to the /goform/goform_set_cmd_process endpoint using the SSID parameter.

Severity Evaluation:

• CVSS Base Score: 9.8
• CVSS Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

The high CVSS score of 9.8 indicates a critical vulnerability. The vector breakdown shows that the attack can be executed remotely (AV:N), requires low complexity (AC:L), does not require any privileges (PR:N) or user interaction (UI:N), and has a high impact on confidentiality, integrity, and availability (C:H/I:H/A:H).

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Remote Code Execution (RCE): The primary attack vector is the ability to execute arbitrary OS commands with root privileges. This can be achieved by sending a crafted POST request to the vulnerable endpoint.
• Unauthenticated Access: The vulnerability does not require authentication, making it easier for attackers to exploit.

Exploitation Methods:

• Crafted POST Request: An attacker can send a specially crafted POST request to the /goform/goform_set_cmd_process endpoint with a malicious SSID parameter. This parameter can contain OS commands that will be executed with root privileges.
• Automated Scripts: Attackers can use automated scripts to scan for vulnerable devices and exploit them en masse.

3. Affected Systems and Software Versions

Affected Systems:

• KuWFi GC111 Devices: Specifically those with Hardware Version CPE-LM321_V3.2 and Software Version GC111-GL-LM321_V3.0_20191211.

Software Versions:

• GC111-GL-LM321_V3.0_20191211: This specific software version is known to be vulnerable.

4. Recommended Mitigation Strategies

Immediate Mitigation:

• Network Segmentation: Isolate vulnerable devices from the public internet to limit exposure.
• Firewall Rules: Implement strict firewall rules to block unauthorized access to the /goform/goform_set_cmd_process endpoint.
• Monitoring: Increase monitoring for suspicious activities and unusual network traffic.

Long-Term Mitigation:

• Firmware Update: Apply the latest firmware updates provided by KuWFi to patch the vulnerability.
• Access Controls: Implement strong access controls and authentication mechanisms to prevent unauthorized access.
• Regular Audits: Conduct regular security audits and vulnerability assessments to identify and mitigate similar issues.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant risk to the European cybersecurity landscape, particularly for organizations and individuals using KuWFi GC111 devices. The potential for remote code execution with root privileges can lead to severe consequences, including data breaches, unauthorized access, and system compromise. The widespread use of such devices in industrial and consumer settings amplifies the risk.

6. Technical Details for Security Professionals

Vulnerability Details:

• Endpoint: /goform/goform_set_cmd_process
• Parameter: SSID
• Exploitation: Crafted POST request with malicious SSID parameter containing OS commands.

Detection and Response:

• Log Analysis: Monitor logs for unusual POST requests to the vulnerable endpoint.
• Intrusion Detection Systems (IDS): Deploy IDS to detect and alert on suspicious activities related to the vulnerability.
• Incident Response: Have an incident response plan in place to quickly address any detected exploitation attempts.

References:

• KuWFi Product Information
• GitHub Repository
• Proton Drive Documentation
• CVE-2025-43984 Details

Conclusion: The vulnerability in KuWFi GC111 devices is critical and requires immediate attention. Organizations should prioritize applying the latest firmware updates and implementing robust security measures to mitigate the risk. Continuous monitoring and regular security assessments are essential to maintain a strong cybersecurity posture.