Belkin F9K1122 Stack-Based Buffer Overflow Vulnerability

Vulnerability

A stack-based buffer overflow vulnerability has been identified in the Belkin F9K1122 router, specifically in version 1.00.33. The issue arises in the 'formWlanSetup' function within the file '/goform/formWlanSetup'. The vulnerability can be exploited remotely by manipulating the 'webpage' argument, leading to potential denial-of-service conditions or arbitrary code execution.

Impact

Exploitation of this vulnerability causes a stack-based buffer overflow, which can lead to arbitrary code execution or a denial-of-service condition.

Reproduction

The vulnerability can be reproduced by sending a POST request to '/goform/formWlanSetup' with a 'webpage' parameter that contains a payload designed to overflow the stack buffer. This can be done using a tool like curl or Postman, or through a custom script that automates the process.

Added: Apr 6, 2026, 1:19 AM
Updated: Apr 6, 2026, 1:19 AM

Vulnerability Rating

Custom Algorithm
spread
0.0
impact
7.5
exploitability
8.2
remediation
0.0
relevance
5.4
threat
6.4
urgency
2.9
incentive
4.2

Our algorithm analyzes dozens of metrics to generate these 8 key vulnerability categories, which are then combined to calculate the overall risk score.