CVE-2025-6916: Totolink t6 Firmware

High severity, CVSS 8.8. EPSS: 0.9% chance of exploitation in the next 30 days.

A vulnerability, which was classified as critical, was found in TOTOLINK T6 4.1.5cu.748_B20211015. This affects the function Form_Login of the file /formLoginAuth.htm. The manipulation of the argument authCode/goURL leads to missing authentication. The attack needs to be initiated within the local network. 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 2025-06-30. Last modified 2026-06-17.