CVE-2021-34207: Totolink a3002r Firmware

Medium severity, CVSS 6.1. EPSS: 0.7% chance of exploitation in the next 30 days.

Cross-site scripting in ddns.htm in TOTOLINK A3002R version V1.1.1-B20200824 (Important Update, new UI) allows attackers to execute arbitrary JavaScript by modifying the "Domain Name" field, "Server Address" field, "User Name/Email", or "Password/Key" field.

Affected products

• Totolink a3002r Firmware: version 1.1.1-b20200824 only

Published 2021-08-20. Last modified 2026-06-17.