Ameeba Security Research

Defensive CVE and exploit intelligence

Ameeba Blog Search
TRENDING · 1 WEEK
Attack Vector
Vendor
Severity

CVE-2025-7549: Critical Vulnerability in Tenda FH1201 Allows Remote Stack-Based Buffer Overflow

Views: 445

Overview

A critical vulnerability, designated as CVE-2025-7549, has been identified in the Tenda FH1201 router firmware version 1.2.0.14(408). This vulnerability lies in the frmL7ProtForm function of the /goform/L7Prot file, and its manipulation can lead to a stack-based buffer overflow. This issue is of significant concern because it can potentially compromise the system and lead to data leakage.
This vulnerability is particularly alarming due to its potential to be exploited remotely, thereby posing a threat to anyone using the affected version of this firmware. The exploit has been publicly disclosed, increasing the likelihood of its use by malicious actors.

Vulnerability Summary

CVE ID: CVE-2025-7549
Severity: Critical (CVSS 8.8)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise, data leakage

Affected Products

Ameeba Chat Icon Share secrets securely

Ameeba is private infrastructure for communication and sensitive work built on encrypted identity instead of exposed corporate identity systems.

Passwords, credentials, confidential files, screenshots, internal discussions, sensitive AI context, and private coordination should not become exposed across ordinary communication platforms.

  • • Encrypted identity
  • • Private Spaces for organizations and teams
  • • End-to-end encrypted chat, calls, files, and notes
  • • Sensitive AI work and protected collaboration
  • • Built for information that cannot leak

Our mission is to secure human work alongside AI.

Product | Affected Versions

Tenda FH1201 | 1.2.0.14(408)

How the Exploit Works

The vulnerability revolves around the manipulation of the ‘page’ argument in the frmL7ProtForm function of the /goform/L7Prot file. By sending a specially crafted request, an attacker can trigger a stack-based buffer overflow. This overflow can lead to arbitrary code execution on the device, allowing the attacker to potentially take full control of the system.

Conceptual Example Code

Below is a conceptual example of how this vulnerability might be exploited. Please note that this is a hypothetical scenario for understanding purposes and not a real exploit code.

POST /goform/L7Prot HTTP/1.1
Host: vulnerable-router-ip
Content-Type: application/x-www-form-urlencoded
page=1&malicious_payload=AAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAAA...

In this example, the ‘page’ parameter is followed by a long string of ‘A’s, which is longer than the buffer can handle. This would overwrite the stack, causing a buffer overflow that could potentially allow the attacker to execute arbitrary code.

Mitigation Guidance

The ideal solution to this vulnerability is to apply the vendor patch when it becomes available. In the interim, users can use Web Application Firewalls (WAFs) or Intrusion Detection Systems (IDS) to identify and block attempts to exploit this vulnerability. Furthermore, it is recommended to restrict access to the affected router to trusted networks and users only.

Want to discuss this further? Join the Ameeba Cybersecurity Group Chat.

Disclaimer:

The information and code presented in this article are provided for educational and defensive cybersecurity purposes only. Any conceptual or pseudocode examples are simplified representations intended to raise awareness and promote secure development and system configuration practices.

Do not use this information to attempt unauthorized access or exploit vulnerabilities on systems that you do not own or have explicit permission to test.

Ameeba and its authors do not endorse or condone malicious behavior and are not responsible for misuse of the content. Always follow ethical hacking guidelines, responsible disclosure practices, and local laws.

More posts

Ameeba Chat