CVE-2025-45779

Comprehensive Technical Analysis of CVE-2025-45779

1. Vulnerability Assessment and Severity Evaluation

CVE ID: CVE-2025-45779 Description: Tenda AC10 V1.0re_V15.03.06.46 is vulnerable to a Buffer Overflow in the formSetPPTPUserList handler via the list POST parameter. CVSS Score: 9.8

Severity Evaluation: The CVSS score of 9.8 indicates a critical vulnerability. This high score is due to the potential for remote code execution, which can lead to complete system compromise. The vulnerability allows an attacker to execute arbitrary code, potentially gaining full control over the affected device.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Remote Exploitation: An attacker can exploit this vulnerability over the network by sending a specially crafted POST request to the formSetPPTPUserList handler.
• Local Exploitation: If an attacker has local access to the device, they can also exploit this vulnerability to escalate privileges.

Exploitation Methods:

• Buffer Overflow: The attacker can send a large amount of data in the list POST parameter, causing a buffer overflow. This can overwrite adjacent memory and potentially execute malicious code.
• Code Injection: By carefully crafting the payload, an attacker can inject and execute arbitrary code, leading to full control over the device.

3. Affected Systems and Software Versions

Affected Systems:

• Tenda AC10 routers running firmware version V1.0re_V15.03.06.46.

Software Versions:

• Specifically, the vulnerability affects Tenda AC10 V1.0re_V15.03.06.46. Other versions may also be affected but have not been explicitly mentioned in the CVE.

4. Recommended Mitigation Strategies

Immediate Mitigation:

• Firmware Update: Users should immediately update their Tenda AC10 routers to the latest firmware version provided by the manufacturer.
• Network Segmentation: Isolate the affected devices from critical networks to limit the potential impact of an exploit.
• Firewall Rules: Implement strict firewall rules to block unauthorized access to the device's management interface.

Long-Term Mitigation:

• Regular Patching: 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.
• Access Control: Implement strong access control measures to limit who can access and configure the device.

5. Impact on Cybersecurity Landscape

Immediate Impact:

• Device Compromise: Successful exploitation can lead to full device compromise, allowing attackers to intercept traffic, modify settings, and use the device as a launchpad for further attacks.
• Network Security: Compromised routers can be used to infiltrate and attack other devices on the network, leading to broader security breaches.

Long-Term Impact:

• Reputation Damage: For organizations, a breach due to this vulnerability can result in significant reputation damage and financial loss.
• Increased Attack Surface: As more IoT devices are deployed, vulnerabilities like this increase the overall attack surface, making it crucial for manufacturers to prioritize security.

6. Technical Details for Security Professionals

Vulnerability Details:

• Handler: formSetPPTPUserList
• Parameter: list
• Type: Buffer Overflow

Exploitation Steps:

1. Identify Target: Locate the Tenda AC10 router running the vulnerable firmware version.
2. Craft Payload: Create a POST request with a large payload in the list parameter to trigger the buffer overflow.
3. Send Request: Use a tool like curl or a custom script to send the crafted POST request to the device.
4. Execute Code: If successful, the payload will overwrite memory and execute the injected code.

Detection and Prevention:

• Log Analysis: Regularly review logs for unusual POST requests to the formSetPPTPUserList handler.
• Anomaly Detection: Implement anomaly detection systems to identify and alert on unusual traffic patterns.
• Code Review: Conduct thorough code reviews and security audits to identify and mitigate similar vulnerabilities in future firmware releases.

References:

• GitHub Exploit Details
• Tenda Firmware Update

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