CVE-2026-8508

Improper Authentication in Zyxel WAX650S Captive Portal

Published Aug 4, 2026 CVSS 3.1 · 6.5 Medium EPSS < 1% KEV · Not listed
Description
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.

Remediation

No solution or workaround provided in the CVE record

Tracking

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Advisories

No advisories available
History
Type Values Removed Values Added
Title Improper Authentication in Zyxel WAX650S Captive Portal
Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}

Type Values Removed Values Added
First Time appeared Zyxel
Zyxel wax650s Firmware
Vendors & Products Zyxel
Zyxel wax650s Firmware
Type Values Removed Values Added
Description 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.
Weaknesses CWE-287
References
Metrics cvssV3_1

{'score': 6.5, 'vector': 'CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N'}

Weaknesses

Sources

Status
PUBLISHED
Assigner
Zyxel
Published
Updated
Aug 4, 2026, 6:46 PM
Reserved
May 14, 2026, 3:49 AM
Status
Awaiting Analysis
Published
Aug 4, 2026, 3:16 AM
Modified
Oct 23, 2026, 11:10 PM