CVE-2022-27004: Totolink a7000r Firmware

Critical severity, CVSS 9.8. EPSS: 2.9% chance of exploitation in the next 30 days.

Totolink routers s X5000R V9.1.0u.6118_B20201102 and A7000R V9.1.0u.6115_B20201022 were discovered to contain a command injection vulnerability in the Tunnel 6in4 function via the remote6in4 parameter. This vulnerability allows attackers to execute arbitrary commands via a crafted request.

Affected products

• Totolink a7000r Firmware: version 9.1.0u.6115_b20201022 only
• Totolink x5000r Firmware: version 9.1.0u.6118_b20201102 only

Published 2022-03-15. Last modified 2026-06-17.