CVE-2026-36611

7.3 HIGH

Published: June 03, 2026 Modified: June 04, 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.

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CVSS v3.x Details

0.0 Low Medium High Critical 10.0

Vector String

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

References to Advisories, Solutions, and Tools

Patch Vendor Advisory Exploit Third Party Advisory

https://github.com/Tymbark7372/MERCUSYS-AC12G/blob/master/advisories/CVE-2026-36611.md

Source: cve@mitre.org

1 reference(s) from NVD

Quick Stats

CVSS v3 Score

7.3 / 10.0

EPSS (Exploit Probability)

0.0%

16th percentile

Exploitation Status

Not in CISA KEV

Weaknesses (CWE)

CWE-200

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