Vulnerability · Published Aug 4, 2026 · Assigned by Zyxel
CVE-2026-6837
High 7.2
In plain English
A high-severity OS command injection in WAX650S firmware from Zyxel. There are no confirmed reports of exploitation so far. The chance it is exploited in the next 30 days is estimated at 1.5% (higher than 75% of all known vulnerabilities). Ready-made attack tooling exists: public proof-of-concept code.
Severity (CVSS 3.1)7.2High
Exploit odds (30 days)1.5%top 25.3% of all CVEs
Exploited in the wildNo reportsCISA SSVC: none
Attack tooling1Public PoC
Official 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.
Affected products (as reported)
| Vendor | Product | Versions |
|---|---|---|
| Zyxel | WAX650S firmware | <= 7.10(ABRM.4)C0 |
Weakness: CWE-78 · Vector: CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H