CVE-2026-8508
Zyxel WAX650S Improper Authentication Vulnerability
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.
INFO
Published Date :
Aug. 4, 2026, 3:16 a.m.
Last Modified :
Aug. 4, 2026, 3:16 a.m.
Remotely Exploit :
No
Source :
[email protected]
CVSS Scores
| Score | Version | Severity | Vector | Exploitability Score | Impact Score | Source |
|---|---|---|---|---|---|---|
| CVSS 3.1 | MEDIUM | 96e50032-ad0d-4058-a115-4d2c13821f9f | ||||
| CVSS 3.1 | MEDIUM | [email protected] |
Solution
- Update Zyxel WAX650S firmware to version AB RM.4)C0 or later.
- Apply vendor-provided security patches.
References to Advisories, Solutions, and Tools
Here, you will find a curated list of external links that provide in-depth
information, practical solutions, and valuable tools related to
CVE-2026-8508.
CWE - Common Weakness Enumeration
While CVE identifies
specific instances of vulnerabilities, CWE categorizes the common flaws or
weaknesses that can lead to vulnerabilities. CVE-2026-8508 is
associated with the following CWEs:
Common Attack Pattern Enumeration and Classification (CAPEC)
Common Attack Pattern Enumeration and Classification
(CAPEC)
stores attack patterns, which are descriptions of the common attributes and
approaches employed by adversaries to exploit the CVE-2026-8508
weaknesses.
We scan GitHub repositories to detect new proof-of-concept exploits. Following list is a collection of public exploits and proof-of-concepts, which have been published on GitHub (sorted by the most recently updated).
Results are limited to the first 15 repositories due to potential performance issues.
The following list is the news that have been mention
CVE-2026-8508 vulnerability anywhere in the article.
The following table lists the changes that have been made to the
CVE-2026-8508 vulnerability over time.
Vulnerability history details can be useful for understanding the evolution of a vulnerability, and for identifying the most recent changes that may impact the vulnerability's severity, exploitability, or other characteristics.
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New CVE Received by [email protected]
Aug. 04, 2026
Action Type Old Value New Value Added Affected [{'vendor': 'Zyxel', 'product': 'WAX650S firmware', 'versions': [{'status': 'affected', 'version': '<= 7.10(ABRM.4)C0'}], 'defaultStatus': 'unaffected'}] 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. Added CVSS V3.1 AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N Added CWE CWE-287 Added Reference 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