CVE-2026-8508
Received Received - Intake

Improper Authentication Bypass in Zyxel WAX650S Firmware

Publication date: 2026-08-04

Last updated on: 2026-08-04

Assigner: Zyxel Corporation

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.

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Meta Information

Published
2026-08-04
Last Modified
2026-08-04
Generated
2026-08-04
AI Q&A
2026-08-04
EPSS Evaluated
N/A
NVD
CVE-2026-8508
EUVD
EUVD-2026-52567

Affected Vendors & Products

Showing 1 associated CPE
Vendor Product Version / Range
zyxel wax650s 7.10_abrm.4

Helpful Resources

Exploitability

CWE
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KEV
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CWE ID Description
CWE-287 When an actor claims to have a given identity, the product does not prove or insufficiently proves that the claim is correct.

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Executive Summary

This vulnerability is an improper authentication issue in the social_login.cgi program of Zyxel WAX650S firmware versions up to 7.10(ABRM.4)C0. It allows an attacker on the WLAN to bypass captive portal authentication.

Impact Analysis

An attacker could gain unauthorized access to the network by bypassing authentication, potentially leading to data breaches or unauthorized use of network resources.

Compliance Impact

This vulnerability could lead to unauthorized access to sensitive data, which may violate compliance requirements for data protection standards like GDPR or HIPAA due to insufficient authentication controls.

Mitigation Strategies

Update the Zyxel WAX650S firmware to the latest version that addresses the improper authentication issue in social_login.cgi. Disable the captive portal feature if not required or restrict access to trusted networks only.

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