What is CVE-2026-6837?

CVE-2026-6837 is a high-severity vulnerability in Zyxel Wax650s Firmware, classified under OS Command Injection. CVSS score: 7.2/10. Published 2026-08-04.

How severe is CVE-2026-6837?

High severity. CVSS v3 base score is 7.2 out of 10.

RCE in Zyxel Wax650s Firmware

CVE-2026-6837

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 a…

Vulnerability class: Command Injection (OS Command Injection)

CVSS v3 metric

CVSS v3 base score 7.2 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H.

Affected products

Zyxel Wax650s Firmware — versions <= 7.10(ABRM.4)C0

Weakness classification (CWE)

CWE-78 — OS Command Injection

References

security@zyxel.com.tw (vendor-advisory)

Frequently asked questions

What is CVE-2026-6837?: CVE-2026-6837 is a high-severity vulnerability in Zyxel Wax650s Firmware, classified under OS Command Injection. CVSS score: 7.2/10. Published 2026-08-04.
How severe is CVE-2026-6837?: High severity. CVSS v3 base score is 7.2 out of 10.