CVE-2022-25134: Totolink t6 Firmware

Critical severity, CVSS 9.8. EPSS: 3% chance of exploitation in the next 30 days.

A command injection vulnerability in the function setUpgradeFW of TOTOLINK Technology router T6 V3_Firmware T6_V3_V4.1.5cu.748_B20211015 allows attackers to execute arbitrary commands via a crafted MQTT packet.

Affected products

• Totolink t6 Firmware: version v4.1.5cu.748_b20211015 only

Published 2022-02-19. Last modified 2026-06-17.