What is CVE-2026-12186?

CVE-2026-12186 is a high-severity vulnerability in Gl.inet Gl-Mt3000, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 8.8/10. Published 2026-06-14.

How severe is CVE-2026-12186?

High severity. CVSS v3 base score is 8.8 out of 10.

RCE in Gl.inet Gl-Mt3000

CVE-2026-12186

A weakness has been identified in GL.iNet GL-MT3000 up to 4.4.5. Affected is the function replace_country in the library /usr/lib/oui-httpd/rpc/tor of the component Tor Proxy Service Configuration Handler. This manipulation causes command injection. The attack can be initiated remotely. The exploit has been made available to the public and could be used for attacks. Upgrading to version 4.7 is able to address this issue. It is recommended to upgrade the affected component. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.

EPSS: 0.020 (79.2th percentile) — read the EPSS interpretation.

CVSS v3 metric

CVSS v3 base score 8.8 (High). Vector: CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H.

Affected products

Gl.inet Gl-mt3000 — versions 4.4.0, 4.4.1, 4.4.2

Weakness classification (CWE)

References

cna@vuldb.com (patch)
cna@vuldb.com (exploit)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (technical-description, vdb-entry)
cna@vuldb.com (signature, permissions-required)

Frequently asked questions

What is CVE-2026-12186?: CVE-2026-12186 is a high-severity vulnerability in Gl.inet Gl-Mt3000, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 8.8/10. Published 2026-06-14.
How severe is CVE-2026-12186?: High severity. CVSS v3 base score is 8.8 out of 10.