CVE-2025-45429

Comprehensive Technical Analysis of CVE-2025-45429

1. Vulnerability Assessment and Severity Evaluation

CVE ID: CVE-2025-45429 CVSS Score: 9.8

The vulnerability in question is a stack overflow in the /goform/WifiWpsStart endpoint of the Tenda ac9 v1.0 router with firmware version V15.03.05.14_multi. This vulnerability can lead to remote arbitrary code execution, which is extremely severe. The high CVSS score of 9.8 underscores the critical nature of this vulnerability, indicating a high risk of exploitation with significant potential impact.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Remote Exploitation: An attacker can exploit this vulnerability over the network without requiring physical access to the device.
• Unauthenticated Access: If the endpoint does not require authentication, an attacker can trigger the vulnerability without needing credentials.

Exploitation Methods:

• Crafted HTTP Requests: An attacker can send specially crafted HTTP requests to the /goform/WifiWpsStart endpoint, causing a stack overflow.
• Payload Delivery: By exploiting the stack overflow, an attacker can inject malicious code that gets executed with the privileges of the router's operating system.

3. Affected Systems and Software Versions

Affected Systems:

• Tenda ac9 v1.0 router

Affected Software Versions:

• Firmware version V15.03.05.14_multi

It is crucial to note that other versions of the firmware and potentially other Tenda router models may also be affected if they share the same codebase.

4. Recommended Mitigation Strategies

Immediate Actions:

• Firmware Update: Apply the latest firmware update provided by Tenda, which should include a patch for this vulnerability.
• Network Segmentation: Isolate the router from critical network segments to limit the potential impact of an exploit.
• Firewall Rules: Implement strict firewall rules to restrict access to the /goform/WifiWpsStart endpoint.

Long-Term Strategies:

• Regular Patch Management: Ensure that all network devices are regularly updated with the latest security patches.
• Intrusion Detection Systems (IDS): Deploy IDS to monitor for suspicious activity and potential exploitation attempts.
• Security Audits: Conduct regular security audits and vulnerability assessments to identify and mitigate similar issues.

5. Impact on Cybersecurity Landscape

The discovery of this vulnerability highlights the ongoing risk associated with IoT devices, particularly routers, which are often the first line of defense in home and small business networks. The potential for remote arbitrary code execution underscores the need for robust security measures and continuous monitoring. This vulnerability also serves as a reminder of the importance of timely patching and the risks associated with outdated firmware.

6. Technical Details for Security Professionals

Vulnerability Details:

• Endpoint: /goform/WifiWpsStart
• Vulnerability Type: Stack Overflow
• Impact: Remote Arbitrary Code Execution

Exploitation Steps:

1. Identify Target: Scan the network to identify Tenda ac9 v1.0 routers with the vulnerable firmware version.
2. Craft Exploit: Develop a payload that triggers the stack overflow in the /goform/WifiWpsStart endpoint.
3. Deliver Payload: Send the crafted HTTP request to the target router.
4. Execute Code: The payload is executed, allowing the attacker to gain control over the router.

Detection and Response:

• Log Analysis: Monitor router logs for unusual activity, particularly around the /goform/WifiWpsStart endpoint.
• Behavioral Analysis: Use behavioral analysis tools to detect anomalous network traffic patterns.
• Incident Response: Have an incident response plan in place to quickly address any detected exploitation attempts.

References:

• Exploit and Third Party Advisory

By addressing this vulnerability promptly and implementing robust security measures, organizations can significantly reduce the risk of exploitation and protect their networks from potential attacks.