CVE-2026-4252: Tenda AC8 Firmware

Critical severity, CVSS 9.8. EPSS: 2% chance of exploitation in the next 30 days.

A vulnerability was identified in Tenda AC8 16.03.50.11. Affected by this issue is the function check_is_ipv6 of the component IPv6 Handler. The manipulation leads to reliance on ip address for authentication. It is possible to initiate the attack remotely. The exploit is publicly available and might be used.

Affected products

• Tenda AC8 Firmware: version 16.03.50.11 only

Published 2026-03-16. Last modified 2026-06-17.