CVE-2026-36618

Mercusys AC12G (EU) V1 with firmware AC12G(EU)_V1_200909 responds to version.bind CHAOS TXT...

4.3 Medium

Mercusys AC12G (EU) V1 with firmware AC12G(EU)_V1_200909 responds to version.bind CHAOS TXT queries, disclosing the DNS resolver software version (unbound 1.22.0), aiding targeted attacks against known vulnerabilities.

Attack profile

How easy it is to exploit

Attack vector: Adjacent network
Complexity: Low
Privileges needed: None
User interaction: None

What an attacker can affect

Confidentiality: Low
Integrity: None
Availability: None

Exploit likelihood

0.16%Up 0.1 points since Jun 4, 2026

What each source reports

CVE List Score used 4.3

Record: CVE-2026-36618
CVSS 3.1: 4.3 MediumCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness: CWE-200
Updated: 2026-11-02

EUVDEUVD-2026-34155 4.3

Record: EUVD-2026-34155
CVSS 3.1: 4.3 MediumCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Updated: 2026-11-02

GitHub AdvisoriesGHSA-2876-5r6w-63mx 4.3

Mercusys AC12G (EU) V1 with firmware AC12G(EU)_V1_200909 responds to version.bind CHAOS TXT...

Record: GHSA-2876-5r6w-63mx
CVSS 3.1: 4.3 MediumCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness: CWE-200
Updated: 2026-11-02

NVD 4.3

Record: CVE-2026-36618
CVSS 3.1: 4.3 MediumCVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
Weakness: CWE-200
Updated: 2026-11-02

History

History
Recorded	Changed	Sources
Nov 2, 2026	first indexed	CVE List, EUVD, GitHub Advisories, NVD

Dates are when Every CVE recorded each change. Upstream dates may differ.

In short

CVE-2026-36618 is a medium vulnerability (CVSS 4.3), published June 3, 2026. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.16%, the 5th percentile. No source names a fixed version.