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Zyxel WAX650S export-cgi Script Passes Input Unsanitized to OS Commands, Allowing Authenticated Administrators to Execute Arbitrary Shell Commands

Last refreshed2026-09-29

Status: NEW  |  Advisory ID: CVE-2026-6837

Key Details

CVECVE-2026-6837
CVSS Score / Version7.2 (High) / CVSS v3.1
Updated2026-08-05
CVSS VectorCVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H
CVSS Proseattack vector is network; attack complexity is low; privileges required is high; user interaction is none; scope is unchanged; confidentiality impact is high; integrity impact is high; availability impact is high.
Classified asCWE-78 (Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection'))

What to Know

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.

References

SourceReference
NVDhttps://nvd.nist.gov/vuln/detail/CVE-2026-6837
CVEhttps://www.cve.org/CVERecord?id=CVE-2026-6837