EUVD-2025-8246

Comprehensive Technical Analysis of EUVD-2025-8246

1. Vulnerability Assessment and Severity Evaluation

The vulnerability EUVD-2025-8246 affects the Telesquare TLR-2005KSH device running firmware version 1.1.4. This vulnerability allows unauthorized command execution when the admin.cgi parameter is requested with setAutorest. The CVSS (Common Vulnerability Scoring System) base score of 9.8 indicates a critical severity level. The scoring vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H breaks down as follows:

• Attack Vector (AV): Network (N) - The vulnerability can be exploited over the network.
• Attack Complexity (AC): Low (L) - The attack is relatively simple to execute.
• Privileges Required (PR): None (N) - No special privileges are required to exploit the vulnerability.
• User Interaction (UI): None (N) - No user interaction is required for the attack to succeed.
• Scope (S): Unchanged (U) - The vulnerability does not change the security scope.
• Confidentiality (C): High (H) - The vulnerability has a high impact on confidentiality.
• Integrity (I): High (H) - The vulnerability has a high impact on integrity.
• Availability (A): High (H) - The vulnerability has a high impact on availability.

Given the high scores in confidentiality, integrity, and availability, this vulnerability poses a significant risk to affected systems.

2. Potential Attack Vectors and Exploitation Methods

The primary attack vector involves sending a specially crafted HTTP request to the admin.cgi endpoint with the setAutorest parameter. This can be done remotely over the network, making it a highly accessible attack vector. Potential exploitation methods include:

• Remote Code Execution (RCE): An attacker could execute arbitrary commands on the affected device, leading to full system compromise.
• Data Exfiltration: Sensitive information could be extracted from the device.
• Denial of Service (DoS): The device could be rendered inoperable by executing commands that disrupt its normal functioning.

3. Affected Systems and Software Versions

The vulnerability specifically affects the Telesquare TLR-2005KSH device running firmware version 1.1.4. Other versions of the firmware or different models of Telesquare devices may not be affected, but this should be verified through further testing.

4. Recommended Mitigation Strategies

To mitigate the risk associated with this vulnerability, the following strategies are recommended:

• Firmware Update: Immediately update the firmware to a version that addresses this vulnerability. If an update is not available, contact the vendor for a patch.
• Network Segmentation: Isolate the affected devices on a separate network segment to limit exposure.
• Access Control: Implement strict access controls to limit who can access the device's administrative interfaces.
• Monitoring and Logging: Enable comprehensive logging and monitoring to detect any suspicious activity targeting the admin.cgi endpoint.
• Firewall Rules: Implement firewall rules to block unauthorized access to the admin.cgi endpoint.

5. Impact on European Cybersecurity Landscape

The vulnerability poses a significant threat to the European cybersecurity landscape, particularly for organizations and individuals using the Telesquare TLR-2005KSH device. Given the critical nature of the vulnerability, it could be exploited by malicious actors to compromise network security, exfiltrate sensitive data, and disrupt operations. This underscores the importance of timely patching and robust cybersecurity practices.

6. Technical Details for Security Professionals

For security professionals, the following technical details are pertinent:

• Exploit Detection: Monitor network traffic for unusual requests to the admin.cgi endpoint, particularly those containing the setAutorest parameter.
• Incident Response: In case of a suspected exploitation, isolate the affected device immediately and perform a forensic analysis to determine the extent of the compromise.
• Vulnerability Scanning: Incorporate this vulnerability into regular vulnerability scanning and penetration testing routines to ensure ongoing detection and mitigation.
• Patch Management: Ensure that a robust patch management process is in place to quickly apply updates as they become available.

Conclusion

EUVD-2025-8246 represents a critical vulnerability in the Telesquare TLR-2005KSH device that requires immediate attention. Organizations should prioritize updating the firmware and implementing the recommended mitigation strategies to protect against potential exploitation. Continuous monitoring and vigilance are essential to safeguard against this and similar threats in the future.

References

• GitHub Repository
• NVD Entry