CVE-2026-36608
HIGH
8,8
Source: 134c704f-9b21-4f2e-91b3-4a467353bcc0
Attack Vector: adjacent_network
Attack Complexity: low
Privileges Required: none
User Interaction: none
Scope: unchanged
Confidentiality: high
Integrity: high
Availability: high
Description
AI Translation Available
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.
441
Unintended Proxy or Intermediary ('Confused Deputy')
DraftCommon Consequences
Security Scopes Affected:
Non-Repudiation
Access Control
Potential Impacts:
Gain Privileges Or Assume Identity
Hide Activities
Execute Unauthorized Code Or Commands
Applicable Platforms
All platforms may be affected
https://github.com/Tymbark7372/MERCUSYS-AC12G/blob/master/advisories/CVE-2026-3…