Stack-Based Buffer Overflow in Tenda i21 WiFi Router
CVE-2024-4249

8.8HIGH

Key Information:

Vendor: Tenda
Status: I21
Vendor: CVE Published:; 27 April 2024

Badges

👾 Exploit Exists🟡 Public PoC

Summary

A critical vulnerability has been identified in the Tenda i21 WiFi Router, specifically in the function handling WiFi SSID retrieval (/goform/wifiSSIDget). The issue arises from improper validation of the 'ssidIndex' argument, which can lead to a stack-based buffer overflow. This flaw allows an attacker to execute arbitrary code remotely, posing significant risk to users if exploited. Despite early notification to the vendor, no response has been received, indicating a potential lack of support for security issues. It is vital for users of the affected product to remain vigilant and apply any available security patches.

Affected Version(s)

i21 1.0.0.14(4656)

Exploit Proof of Concept (PoC)

PoC code is written by security researchers to demonstrate the vulnerability can be exploited. PoC code is also a key component for weaponization which could lead to ransomware.

CVE-2024-4249 - Proof of Concept