What is CVE-2026-18601?

CVE-2026-18601 is a critical-severity vulnerability in Gl.inet Gl-mt3000, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 9.8/10. Published 2026-08-03.

How severe is CVE-2026-18601?

Critical severity. CVSS v3 base score is 9.8 out of 10.

RCE in Gl.inet Gl-mt3000

CVE-2026-18601

A vulnerability was found in GL.iNet GL-MT3000 up to 4.4.5. This impacts the function ovpn-client.check_config of the file /cgi-bin/glc of the component ovpn-client.so Native Plugin. Performing a manipulation of the argument filename resul…

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/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 (technical-description, vdb-entry)
cna@vuldb.com (signature, permissions-required)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (third-party-advisory)
cna@vuldb.com (exploit)

Frequently asked questions

What is CVE-2026-18601?: CVE-2026-18601 is a critical-severity vulnerability in Gl.inet Gl-mt3000, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 9.8/10. Published 2026-08-03.
How severe is CVE-2026-18601?: Critical severity. CVSS v3 base score is 9.8 out of 10.