CVE-2026-12187CWE-74CWE-77

GL.iNet GL-MT3000 Online Firmware Upgrade one_click_upgrade command injection

High · published June 14, 2026

CVSS v4.0
8.7
EPSS
2%
Percentile
80.0
In the wild
Unconfirmed
What it is

A security vulnerability has been detected in GL.iNet GL-MT3000 up to 4.4.5. Affected by this vulnerability is an unknown functionality of the file /usr/bin/one_click_upgrade of the component Online Firmware Upgrade Handler. Such manipulation leads to command injection. The attack can be launched remotely. The exploit has been disclosed publicly and may be used. Upgrading to version 4.7 addresses this issue. Upgrading the affected component is advised. The vendor was contacted early, responded in a very professional manner and quickly released a fixed version of the affected product.

The record
Technical detail
CVSS v4.0
8.7 · HIGH
Vector
CVSS:4.0/AV:N/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:P
EPSS
0.01940 · 80.0th percentile
Weaknesses
CWE-74 · Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection'); CWE-77 · Improper Neutralization of Special Elements used in a Command ('Command Injection')
Published
2026-06-14T22:00Z
EPSS history
Timeline
  • 14 JUN 22:00Z
    GL.iNet GL-MT3000 Online Firmware Upgrade one_click_upgrade command injection
    cvelistv5