CVE-2021-45740: Totolink a720r Firmware

Critical severity, CVSS 9.8. EPSS: 1.4% chance of exploitation in the next 30 days.

TOTOLINK A720R v4.1.5cu.470_B20200911 was discovered to contain a stack overflow in the setWiFiWpsStart function. This vulnerability allows attackers to cause a Denial of Service (DoS) via the pin parameter.

Affected products

• Totolink a720r Firmware: version 4.1.5cu.470_b20200911 only

Published 2022-02-04. Last modified 2026-06-17.