Vulnerability Report

CVE-2026-6837

RCE

Title: Post-auth command injection in Zyxel WAX650S

RCE

Proof Of Concept

PoC Available for CVE-2026-6837

CWE Category CWE-78

Published Date Aug 04, 2026

Modified Date Aug 05, 2026

Exploit Status Available

Score 7.2 CVSS v3.1

Exploit Probability (EPSS)

1.52%

Vulnerability Summary

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 an affected device.

Impacted Vendors

Analysis in Progress...

Reference Links

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

CVSS v3.1

Source Entity [email protected]

Severity HIGH

7.2

Attack Vector

NETWORK

Complexity

LOW

Privileges

N/A

Interaction

NONE

Confidentiality

N/A

Integrity

N/A

Availability

N/A

Scope

UNCHANGED

RAW VECTOR CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Associated Attack Patterns (CAPEC)

Total: Patterns

CVE-2026-6837 Exploits & PoCs (Proof Of Concept)

GitHub https://github.com/minanagehsalalma/CVE-2026-6837-zyxel-export-cgi-command-injection

View Code

August 05, 2026 MODIFIED

Vulnerability data updated via NVD.

August 04, 2026 MODIFIED

Vulnerability data updated via NVD.

August 04, 2026 MODIFIED

Vulnerability data updated via NVD.

August 04, 2026 MODIFIED

Vulnerability data updated via NVD.

Attack Vector Matrix

Access Vector NETWORK

Complexity LOW

Privileges N/A

Interaction NONE

CVSS Vector String


                                    CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H

Affected Stack

No specific products linked.