Security Advisory

CVE-2026-36603

CVE vulnerability detail - eXtreme Datacenter Security Operations

Published 2026-06-03 00:00:00

Last updated 2026-06-05 02:04:20

Assigner mitre

CVSS score not scored

State PUBLISHED

Description

Mercusys AC12G (EU) V1 router with firmware AC12G(EU)_V1_200909 exposes 15 of 18 UPnP IGD actions without authentication on port 1900, including AddPortMapping and GetExternalIPAddress. UPnP is enabled by default through the admin interface, allowing any unauthenticated LAN device to create arbitrary port forwarding rules and access WAN traffic statistics.

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