CVE-2026-6837

High

Description

A post-authentication command injection vulnerability in the "export-cgi" CGI program in Zyxel WAX650S firmware versions through 7.10(ABRM.4)C0 could allow an authenticated attacker with administrator privileges to execute OS commands on an affected device.

SeverityHigh

CVSS7.2

Exploit probability—

Product

WAX650S firmware

PublishedAug 4, 2026

First seenAug 4, 2026

Weakness typeCWE-78OS command injection

How to fix

Vendor advisories

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

Affected products

Product	Affected versions	Fixed in
Zyxel WAX650S firmware	<= 7.10(ABRM.4)C0	—

Check your version

Choose the product and enter the version you run to see whether it falls in the affected range.

In the Intelligence 360 plan

Attack Surface Management

See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.