EUVD-2025-18775

Comprehensive Technical Analysis of EUVD-2025-18775

1. Vulnerability Assessment and Severity Evaluation

The vulnerability described in EUVD-2025-18775 is an OS command injection vulnerability affecting the Edimax EW-7438RPn Mini firmware version 1.13 and prior. This vulnerability allows a remote authenticated attacker to execute arbitrary shell commands with root privileges via the syscmd.asp form handler, specifically through the /goform/formSysCmd endpoint and the sysCmd parameter.

Severity Evaluation:

• Base Score: 9.4 (Critical)
• Base Score Version: 4.0
• Base Score Vector: CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:H/SI:H/SA:H

The high base score indicates a critical vulnerability due to the potential for complete system compromise, including confidentiality, integrity, and availability impacts. The attack vector is network-based, requiring low complexity and low privileges, with no user interaction needed.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Remote Authenticated Access: An attacker with valid credentials can exploit this vulnerability by sending crafted HTTP requests to the /goform/formSysCmd endpoint.
• Phishing and Credential Theft: Attackers may use phishing techniques to obtain valid credentials, which can then be used to exploit the vulnerability.

Exploitation Methods:

• Command Injection: The attacker can inject malicious commands into the sysCmd parameter, leading to arbitrary command execution 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:

• Edimax EW-7438RPn Mini: A Wi-Fi range extender.

Affected Software Versions:

• Firmware Version: 1.13 and prior.

4. Recommended Mitigation Strategies

Immediate Mitigation:

• Firmware Update: Upgrade to a patched firmware version if available.
• Network Segmentation: Isolate vulnerable devices from critical networks.
• Access Control: Implement strict access controls and monitor for unusual activity.

Long-Term Mitigation:

• Regular Patching: Ensure all devices are regularly updated with the latest firmware.
• Credential Management: Use strong, unique passwords and enable multi-factor authentication where possible.
• Intrusion Detection: Deploy intrusion detection systems (IDS) to monitor for suspicious activity.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant risk to European organizations and individuals using the affected Edimax devices. Given the widespread use of Wi-Fi range extenders in both home and enterprise environments, the potential for large-scale exploitation is high. This could lead to data breaches, unauthorized access, and disruption of services, impacting the overall cybersecurity posture of the region.

6. Technical Details for Security Professionals

Vulnerability Details:

• Endpoint: /goform/formSysCmd
• Parameter: sysCmd
• Exploitation: Injecting shell commands into the sysCmd parameter results in command execution as the root user.

Detection and Response:

• Log Analysis: Monitor logs for unusual command execution patterns.
• Network Traffic Analysis: Use network monitoring tools to detect suspicious traffic to the /goform/formSysCmd endpoint.
• Incident Response: Have an incident response plan in place to quickly address any detected exploitation attempts.

References:

• Edimax Product Page: Edimax EW-7438RPn Mini
• Exploit Database: Exploit-DB Entry
• Broadcom Security Center: Broadcom Attack Signatures
• VulnCheck Advisory: VulnCheck Advisory

Aliases:

• CVE-2025-34029

Assigner:

• VulnCheck

ENISA IDs:

• Product: dfcb9163-1cf4-3ec5-97ec-3952bf3de2d6
• Vendor: e86b4178-dd55-3e8a-8377-cce718dba3e9

By addressing this vulnerability promptly and effectively, organizations can mitigate the risk of exploitation and maintain a robust cybersecurity posture.