What is GHSA-rh54-5hmc-6qjg?

GHSA-rh54-5hmc-6qjg is a security advisory published by GitHub Security Advisories with High severity. Mercusys AC12G (EU) V1 with firmware AC12G(EU)_V1_200909 returns 128 bytes of uninitialized...

Which CVE IDs does GHSA-rh54-5hmc-6qjg cover?

GHSA-rh54-5hmc-6qjg covers the following CVE IDs: CVE-2026-36611. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of GHSA-rh54-5hmc-6qjg?

GHSA-rh54-5hmc-6qjg has a CVSS v3 base score of 7.3, published by GitHub Security Advisories.

GHSA-rh54-5hmc-6qjgHighCVSS 7.3

Mercusys AC12G (EU) V1 with firmware AC12G(EU)_V1_200909 returns 128 bytes of uninitialized...

Vendor

GitHub Security Advisories

Published

June 3, 2026

Last Modified

June 3, 2026

🔗 CVE IDs covered (1)

CVE-2026-36611 →

📋 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.

🔗 References (3)

https://nvd.nist.gov/vuln/detail/CVE-2026-36611
https://github.com/Tymbark7372/MERCUSYS-AC12G/blob/master/advisories/CVE-2026-36611.md
https://github.com/advisories/GHSA-rh54-5hmc-6qjg