Ameeba Security Research

Defensive CVE and exploit intelligence

Ameeba Blog Search
TRENDING · 1 WEEK
Attack Vector
Vendor
Severity

CVE-2025-53713: Buffer Overflow Vulnerability in TP-Link TL-WR841N V11 Leading to Potential DoS Attacks

Views: 223

Overview

This report covers a critical vulnerability discovered in TP-Link TL-WR841N V11, specifically the /userRpm/WlanNetworkRpm_APC.htm file. The vulnerability, identified as CVE-2025-53713, arises due to lack of input parameter validation, leading to buffer overflow. The potential impact of this vulnerability is severe, including system crashes and a denial-of-service (DoS) condition. As this vulnerability can be exploited remotely and affects products no longer supported by the maintainer, the risk is heightened.

Vulnerability Summary

CVE ID: CVE-2025-53713
Severity: High (7.5 CVSS Score)
Attack Vector: Network
Privileges Required: None
User Interaction: None
Impact: Potential system compromise, data leakage, and DoS condition

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

TP-Link TL-WR841N | V11

How the Exploit Works

The exploit takes advantage of a lack of input parameter validation in the /userRpm/WlanNetworkRpm_APC.htm file. By sending specially crafted data, an attacker can overflow the buffer, causing the web service to crash and possibly leading to a denial-of-service condition. The attack can be launched remotely, increasing the potential risk.

Conceptual Example Code

Below is a conceptual example of how the vulnerability might be exploited using a malicious HTTP POST request:

POST /userRpm/WlanNetworkRpm_APC.htm HTTP/1.1
Host: target.example.com
Content-Type: application/json
{ "input_parameter": "A"*10000 } // A large amount of data to overflow the buffer

This example involves sending an oversized amount of data (‘A’*10000) as the input parameter, thereby exploiting the lack of input validation and overflowing the buffer.

Mitigation Guidance

As the affected products are no longer supported by the maintainer, the primary mitigation is to apply the vendor patch. For temporary mitigation, use a Web Application Firewall (WAF) or an Intrusion Detection System (IDS), which can detect and block attempts to exploit this vulnerability.

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