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TOTOLINK A800R Buffer Overflow Vulnerability in downloadFile.cgi

Vulnerability

A buffer overflow vulnerability has been identified in the TOTOLINK A800R router, specifically in version V4.1.2cu.5137_B20200730. The issue arises in the downloadFile.cgi file, where the v14 parameter is improperly handled, leading to potential memory corruption.

Impact

Exploitation of this vulnerability can result in a buffer overflow, which may allow for arbitrary code execution or causing a denial-of-service condition on the device.

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

Vulnerability Rating

Custom Algorithm
spread
0.3
impact
10.0
exploitability
9.1
remediation
0.0
relevance
0.0
threat
6.4
urgency
2.9
incentive
9.2

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