EUVD-2025-6430

Comprehensive Technical Analysis of EUVD-2025-6430

1. Vulnerability Assessment and Severity Evaluation

The vulnerability EUVD-2025-6430, also known as CVE-2025-29030, pertains to a buffer overflow in the formWifiWpsOOB function within Tenda AC6 v15.03.05.16. The Common Vulnerability Scoring System (CVSS) v3.1 base score of 9.8 indicates a critical severity level. 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:

• Attack Vector (AV:N): Network, meaning the vulnerability is exploitable remotely.
• Attack Complexity (AC:L): Low, indicating that the attack is relatively straightforward to execute.
• Privileges Required (PR:N): None, meaning no special privileges are needed to exploit the vulnerability.
• User Interaction (UI:N): None, indicating that no user interaction is required for the attack to succeed.
• Scope (S:U): Unchanged, meaning the vulnerability does not affect resources beyond the security scope managed by the security authority.
• Confidentiality (C:H): High impact on confidentiality.
• Integrity (I:H): High impact on integrity.
• Availability (A:H): High impact on availability.

Given these metrics, the vulnerability poses a significant risk to the confidentiality, integrity, and availability of affected systems.

2. Potential Attack Vectors and Exploitation Methods

The buffer overflow in the formWifiWpsOOB function can be exploited through several potential attack vectors:

• Remote Code Execution (RCE): An attacker could send specially crafted network packets to the vulnerable function, leading to arbitrary code execution on the device.
• Denial of Service (DoS): By sending malformed data, an attacker could crash the device, resulting in a denial of service.
• Data Exfiltration: Exploiting the buffer overflow could allow an attacker to read sensitive information from the device's memory.

Exploitation methods may include:

• Network Scanning: Identifying vulnerable devices on the network.
• Crafted Payloads: Developing and sending payloads that trigger the buffer overflow.
• Automated Scripts: Using scripts to automate the exploitation process across multiple devices.

3. Affected Systems and Software Versions

The vulnerability specifically affects Tenda AC6 devices running firmware version v15.03.05.16. It is crucial to note that other versions of the firmware may also be affected if they share the same codebase or have not been patched for this specific issue.

4. Recommended Mitigation Strategies

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

• Firmware Update: Immediately apply any available firmware updates from Tenda that address this vulnerability.
• Network Segmentation: Isolate vulnerable devices on separate network segments to limit potential attack surfaces.
• Firewall Rules: Implement strict firewall rules to restrict access to the vulnerable function.
• Intrusion Detection Systems (IDS): Deploy IDS to monitor for suspicious network activity targeting the formWifiWpsOOB function.
• Regular Audits: Conduct regular security audits and vulnerability assessments to identify and address similar issues proactively.

5. Impact on European Cybersecurity Landscape

The presence of this vulnerability in a widely used consumer device like the Tenda AC6 underscores the importance of robust cybersecurity measures in the Internet of Things (IoT) ecosystem. The European cybersecurity landscape could face significant challenges if such vulnerabilities are not promptly addressed, including:

• Increased Attack Surface: More devices connected to the internet increase the attack surface for cyber threats.
• Consumer Trust: Vulnerabilities in consumer devices can erode public trust in IoT and smart home technologies.
• Regulatory Compliance: Non-compliance with cybersecurity regulations could result in legal and financial penalties for manufacturers.

6. Technical Details for Security Professionals

For security professionals, the following technical details are pertinent:

• Vulnerable Function: The formWifiWpsOOB function is the point of vulnerability. This function is likely involved in handling WPS (Wi-Fi Protected Setup) operations.
• Exploit Development: Crafting an exploit would involve understanding the function's input handling and identifying the specific buffer that can be overflowed.
• Detection: Monitoring network traffic for anomalous patterns targeting the WPS functionality can help detect potential exploitation attempts.
• Patch Analysis: Reviewing the patched firmware version to understand the changes made to mitigate the vulnerability can provide insights into similar issues in other devices.

In conclusion, EUVD-2025-6430 represents a critical vulnerability that requires immediate attention from both manufacturers and users. Proactive mitigation strategies and continuous monitoring are essential to safeguard against potential exploits.

References

• GitHub Issue
• NVD Detail