CVE-2026-8508

MEDIUM 6.5

CVSS Score

6.5

EPSS Score

0.0%

EPSS Percentile

0th

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.

CWE	CWE-287
Vendor	zyxel
Product	wax650s firmware
Published	Aug 4, 2026

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CVSS v3 Breakdown

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

Attack Vector

Adjacent

Attack Complexity

Low

Privileges Required

None

User Interaction

None

Scope

Unchanged

Confidentiality

High

Integrity

None

Availability

None

Affected Versions

Zyxel / WAX650S firmware

<= 7.10(ABRM.4)C0

References

NVD ↗ CVE.org ↗ EPSS Data ↗

zyxel.com: https://www.zyxel.com/global/en/support/security-advisories/zyxel-security-advisory-for-command-injection-and-improper-authentication-vulnerabilities-in-certain-aps-fwa7-and-security-routers-08-04-2026