EUVD-2025-3051

Comprehensive Technical Analysis of EUVD-2025-3051

1. Vulnerability Assessment and Severity Evaluation

The vulnerability identified in the Tenda ac9 v1.0 firmware v15.03.05.19 is a stack overflow in the /goform/SetOnlineDevName endpoint. This vulnerability can lead to remote arbitrary code execution, which is highly critical. The CVSS (Common Vulnerability Scoring System) base score of 9.8 indicates a severe threat. The CVSS vector CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H breaks down as follows:

• AV:N (Attack Vector: Network): The vulnerability is exploitable over the network.
• AC:L (Attack Complexity: Low): The attack requires minimal skill or resources.
• PR:N (Privileges Required: None): No special privileges are needed to exploit the vulnerability.
• UI:N (User Interaction: None): No user interaction is required.
• S:U (Scope: Unchanged): The vulnerability does not change the security scope.
• C:H (Confidentiality: High): The vulnerability can lead to a complete breach of confidentiality.
• I:H (Integrity: High): The vulnerability can lead to a complete breach of integrity.
• A:H (Availability: High): The vulnerability can lead to a complete breach of availability.

2. Potential Attack Vectors and Exploitation Methods

The stack overflow vulnerability in the /goform/SetOnlineDevName endpoint can be exploited by sending a specially crafted HTTP request to the affected device. An attacker could:

• Send a Malicious Payload: Craft an HTTP request with a payload designed to overflow the stack buffer.
• Execute Arbitrary Code: Once the stack is overflowed, the attacker can inject and execute arbitrary code on the device.
• Gain Remote Control: The attacker can potentially gain full control over the device, leading to further exploitation within the network.

3. Affected Systems and Software Versions

The vulnerability specifically affects:

• Device: Tenda ac9 v1.0
• Firmware Version: v15.03.05.19

Other versions of the firmware and similar devices should be checked for similar vulnerabilities, as they may also be affected.

4. Recommended Mitigation Strategies

To mitigate the risk associated with this vulnerability, the following steps should be taken:

• Update Firmware: Immediately update the firmware to a version that addresses this vulnerability.
• Network Segmentation: Isolate the affected devices on a separate network segment to limit potential damage.
• Firewall Rules: Implement strict firewall rules to restrict access to the /goform/SetOnlineDevName endpoint.
• Intrusion Detection Systems (IDS): Deploy IDS to monitor for suspicious activity targeting the vulnerable endpoint.
• 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 European cybersecurity, particularly for organizations and individuals using Tenda ac9 devices. The potential for remote arbitrary code execution can lead to:

• Data Breaches: Unauthorized access to sensitive information.
• Network Compromise: Further exploitation of internal networks.
• Service Disruption: Denial of service attacks affecting availability.

Given the widespread use of such devices in both residential and commercial settings, the impact could be far-reaching.

6. Technical Details for Security Professionals

For security professionals, the following technical details are pertinent:

• Vulnerable Endpoint: /goform/SetOnlineDevName
• Exploitation Method: Stack overflow via crafted HTTP request.
• Mitigation: Patch the firmware or implement network-level protections.
• Detection: Monitor network traffic for unusual patterns targeting the vulnerable endpoint.
• Response: Isolate affected devices and apply updates as soon as they are available.

Conclusion

The stack overflow vulnerability in Tenda ac9 v1.0 firmware v15.03.05.19 is a critical issue that requires immediate attention. Organizations and individuals should prioritize updating their firmware and implementing robust security measures to mitigate the risk. Continuous monitoring and regular security assessments are essential to maintain a strong cybersecurity posture.

References

• Tenda AC9V1-0 V15-03-05-19 formSetDeviceName sprintf bof
• CVE ID: CVE-2025-22946
• Assigner: Mitre

This analysis provides a comprehensive overview for cybersecurity professionals to understand and address the vulnerability effectively.