CVE-2026-8508: Zyxel WAX650S Firmware

Medium severity, CVSS 6.5. EPSS: 0.3% chance of exploitation in the next 30 days.

An improper authentication vulnerability in the "social_login.cgi" CGI program in Zyxel WAX650S firmware versions through 7.10(ABRM.4)C0 could allow an attacker on the WLAN to bypass captive portal authentication.

Affected products

• Zyxel WAX650S Firmware: up to and including 7.10(ABRM.4)C0

Published 2026-08-04. Last modified 2026-08-04.