TOTOLINK A3100R Buffer Overflow Vulnerability in setMacQos Interface

Vulnerability

A buffer overflow vulnerability has been identified in the TOTOLINK A3100R router, specifically in version V5.9c.1527. The issue arises in the setMacQos interface within the /lib/cste_modules/firewall.so file, where the priority parameter is improperly handled, allowing for potential memory corruption.

Impact

Exploitation of this vulnerability leads to a buffer overflow, which can commonly result in arbitrary code execution or causing the device to crash.

Added: Jun 9, 2025, 7:46 PM
Updated: Jun 9, 2025, 7:46 PM

Vulnerability Rating

Custom Algorithm
spread
2.6
impact
10.0
exploitability
8.4
remediation
0.0
relevance
0.0
threat
6.4
urgency
2.9
incentive
5.0

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