CVE-2022-29640: Totolink a3100r Firmware

High severity, CVSS 7.5. EPSS: 1.2% chance of exploitation in the next 30 days.

TOTOLINK A3100R V4.1.2cu.5050_B20200504 and V4.1.2cu.5247_B20211129 were discovered to contain a stack overflow via the comment parameter in the function setPortForwardRules. This vulnerability allows attackers to cause a Denial of Service (DoS) via a crafted POST request.

Affected products

• Totolink a3100r Firmware: version 4.1.2cu.5050_b20200504 only; version 4.1.2cu.5247_b20211129 only

Published 2022-05-18. Last modified 2026-06-17.