Overview
The CVE-2025-4810 vulnerability is a critical security flaw discovered in Tenda AC7 15.03.06.44, a widely used WiFi router. The vulnerability has been categorized as a stack-based buffer overflow vulnerability, which can potentially compromise the entire system or lead to data leakage. The vulnerability affects a specific function of the router, making it susceptible to remote attacks. This vulnerability is significant due to its potential for widespread impact.
Vulnerability Summary
CVE ID: CVE-2025-4810
Severity: Critical, CVSS Score 8.8
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: System compromise and potential data leakage
Affected Products
Escape the Surveillance Era
Most apps won’t tell you the truth.
They’re part of the problem.
Phone numbers. Emails. Profiles. Logs.
It’s all fuel for surveillance.
Ameeba Chat gives you a way out.
- • No phone number
- • No email
- • No personal info
- • Anonymous aliases
- • End-to-end encrypted
Chat without a trace.
Product | Affected Versions
Tenda AC7 | 15.03.06.44
How the Exploit Works
The vulnerability exists in the formSetRebootTimer function of the /goform/SetRebootTimer file in Tenda AC7. The function is designed to accept a user-specified reboot_time argument. However, due to insufficient validation of this argument, an attacker can manipulate the reboot_time argument to trigger a buffer overflow. This overflow can lead to arbitrary code execution thus giving the attacker control over the system.
Conceptual Example Code
This conceptual example represents how an attacker might exploit this vulnerability. In this case, a malicious HTTP POST request is made to the endpoint that accepts the reboot_time argument.
POST /goform/SetRebootTimer HTTP/1.1
Host: target.example.com
Content-Type: application/json
{ "reboot_time": "VERY LONG STRING THAT TRIGGERS BUFFER OVERFLOW..." }The “reboot_time” argument is filled with an excessively long string that triggers a buffer overflow, leading to potential system compromises and data leakage if successfully exploited.
Mitigation and Patch Information
Users are advised to apply the vendor patch as soon as possible to mitigate this vulnerability. In case the patch is not immediately available or cannot be applied immediately, users can use a Web Application Firewall (WAF) or an Intrusion Detection System (IDS) as a temporary mitigation measure. These systems can detect and block attempts to exploit this vulnerability, providing a layer of protection until the patch can be applied.