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.
Published: 2026-08-04
Score: 7.2 High
EPSS: < 1% Very Low
KEV: No
Impact: n/a
Action: n/a
AI Analysis

Impact

The vulnerability is a command injection flaw that is executed only after a user authenticates with administrator privileges. An attacker who can log into the Zyxel WAX650S device can trigger arbitrary operating‑system commands through the vulnerable "export-cgi" program, thereby compromising the confidentiality, integrity, and availability of the affected network device. The weakness is classified as an OS Command Injection (CWE‑78) and is reflected in the CVSS score of 7.2.

Affected Systems

Zyxel WAX650S access points and security routers running firmware versions up to and including 7.10(ABRM.4)C0 are affected. Devices with later firmware revisions are not impacted.

Risk and Exploitability

The CVSS base score of 7.2 signifies high severity; however, exploitation requires pre‑existing authenticated administrator credentials. Because no EPSS value is reported and the vulnerability is not listed in the CISA KEV catalog, the likelihood of widespread exploitation is uncertain. Based on the requirement for administrator credentials, it is inferred that weak or poorly managed administrator accounts could further increase the risk.

Generated by OpenCVE AI on August 4, 2026 at 20:35 UTC.

Remediation

No vendor fix or workaround currently provided.

OpenCVE Recommended Actions

  • Upgrade the Zyxel WAX650S firmware to the latest version (any release beyond 7.10(ABRM.4)C0).
  • If an immediate firmware upgrade is not possible, restrict administrative access to the web interface and consider disabling the "export-cgi" functionality through device settings or network segmentation.
  • Enforce strong, unique passwords and multi‑factor authentication for all administrator accounts to reduce the risk of unauthorized credential compromise.

Generated by OpenCVE AI on August 4, 2026 at 20:35 UTC.

Tracking

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Advisories

No advisories yet.

History

Tue, 04 Aug 2026 21:00:00 +0000

Type Values Removed Values Added
Title Command Injection Controlled by Authenticated Administrator in Zyxel WAX650S Firmware

Tue, 04 Aug 2026 19:30:00 +0000

Type Values Removed Values Added
Metrics ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Tue, 04 Aug 2026 03:45:00 +0000

Type Values Removed Values Added
First Time appeared Zyxel
Zyxel wax650s Firmware
Vendors & Products Zyxel
Zyxel wax650s Firmware

Tue, 04 Aug 2026 02:30:00 +0000

Type Values Removed Values Added
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.
Weaknesses CWE-78
References
Metrics cvssV3_1

{'score': 7.2, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H'}


Subscriptions

Zyxel Wax650s Firmware
cve-icon MITRE

Status: PUBLISHED

Assigner: Zyxel

Published:

Updated: 2026-08-05T03:56:19.206Z

Reserved: 2026-04-22T03:09:29.255Z

Link: CVE-2026-6837

cve-icon Vulnrichment

Updated: 2026-08-04T18:47:43.591Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2026-08-04T03:16:25.890

Modified: 2026-08-05T05:17:14.873

Link: CVE-2026-6837

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-08-04T20:45:03Z

Weaknesses
  • CWE-78

    Improper Neutralization of Special Elements used in an OS Command ('OS Command Injection')