CVE-2025-7837: Totolink t6 Firmware

High severity, CVSS 8.8. EPSS: 1.2% chance of exploitation in the next 30 days.

A vulnerability was found in TOTOLINK T6 4.1.5cu.748_B20211015 and classified as critical. Affected by this issue is the function recvSlaveStaInfo of the component MQTT Service. The manipulation of the argument dest leads to buffer overflow. The attack may be launched remotely. The exploit has been disclosed to the public and may be used.

Affected products

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

Published 2025-07-19. Last modified 2026-06-17.