CVE-2026-36608

HighCVSS 8.8/10Last modified Jul 22, 2026

Description

Mercusys AC12G (EU) V1 router with firmware AC12G(EU)_V1_200909 allows UPnP AddPortMapping to forward external ports to the router's own admin interface by accepting its own IP (192.168.1.1) or localhost (127.0.0.1) as InternalClient. An unauthenticated LAN attacker can expose the admin panel to the internet with a single SOAP request.

Metrics

CVSS 3.1 8.8/10CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Weakness enumeration

CWE-441

Affected software

No affected versions have been published.

Timeline

Published
Jun 3, 2026
Last modified
Jul 22, 2026
NVD status
Deferred

Related CVEs from 2026

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CVE-2026-36608: High severity, CVSS 8.8 | Vulnix