Overview
Cybersecurity researchers have recently discovered a serious vulnerability in the Tenda AC1206 router, specifically in version 15.03.06.23. This vulnerability, designated as CVE-2025-10432, is located in the HTTP Request Handler component, which could potentially allow remote attackers to compromise systems and leak sensitive data. The gravity of this cybersecurity issue is underlined by its high CVSS Severity Score of 9.8, indicating a critical level of risk. Given that Tenda routers are widely used across various sectors, this vulnerability could have far-reaching implications if not promptly addressed.
Vulnerability Summary
CVE ID: CVE-2025-10432
Severity: Critical (CVSS 9.8)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: System compromise and data leakage
Affected Products
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Product | Affected Versions
Tenda AC1206 | 15.03.06.23
How the Exploit Works
The vulnerability in question resides in the check_param_changed function of the file /goform/AdvSetMacMtuWa. By manipulating the ‘wanMTU’ argument, attackers can trigger a stack-based buffer overflow. This overflow, in turn, can lead to arbitrary code execution, potentially giving the attacker control over the system. Since the exploit can be remotely triggered, the attacker does not need physical access to the device.
Conceptual Example Code
Here is a conceptual example of how this vulnerability might be exploited. This example illustrates an HTTP POST request that sends a malicious payload to trigger the buffer overflow.
POST /goform/AdvSetMacMtuWa HTTP/1.1
Host: target.example.com
Content-Type: application/x-www-form-urlencoded
wanMTU=65536&malicious_payload=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...In this hypothetical scenario, the ‘wanMTU’ parameter is set to a value that exceeds the allocated buffer size and the ‘malicious_payload’ contains a string of ‘A’s, which could be replaced with any other data designed to overrun the buffer and execute malicious code.
Mitigation and Remediation
To mitigate against this vulnerability, users are advised to apply the vendor’s patch as soon as it becomes available. In the interim, deploying a Web Application Firewall (WAF) or Intrusion Detection System (IDS) can serve as a temporary mitigation method by detecting and blocking attempts to exploit this vulnerability. It is also recommended that organizations monitor their network traffic for any signs of unusual activity, as this could indicate an attempted or successful exploit.
