CVE-2026-36611

HighCVSS 7.3/10Last modified Jul 22, 2026

Description

Mercusys AC12G (EU) V1 with firmware AC12G(EU)_V1_200909 returns 128 bytes of uninitialized buffer when receiving POST requests without SOAPAction header on UPnP port 1900, exposing internal memory to unauthenticated adjacent network attackers.

Metrics

CVSS 3.1 7.3/10CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:L

Weakness enumeration

CWE-200

Affected software

No affected versions have been published.

Timeline

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

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