CVE-2026-12187

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.

CVSS v3 8.8 HIGH
CVSS v2.0 9.0 HIGH

8.8^/10

CVSS v3 : HIGH

Vector :

Exploitability : 2.8 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required LOW

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

9.0^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:L/Au:S/C:C/I:C/A:C

Exploitability : 8.0 / Impact : 10.0

Access Vector NETWORK

Access Complexity LOW

Authentication SINGLE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://fw.gl-inet.com/firmware/mt3000/release/mt3000-4.8.1-0819-1755615825.tar
https://github.com/StrTzz123/iot_vul/tree/main/GL-iNet/MT3000/4.4.5/upgrade_online_url
https://vuldb.com/cve/CVE-2026-12187
https://vuldb.com/submit/815654
https://vuldb.com/vuln/370833
https://vuldb.com/vuln/370833/cti

Configurations

No configuration.

History

14 Jun 2026, 23:16

Type	Values Removed	Values Added
New CVE

Information

Published : 2026-06-14 23:16

Updated : 2026-06-15 20:42

NVD link : CVE-2026-12187

Mitre link : CVE-2026-12187

CVE.ORG link : CVE-2026-12187

JSON object : View

Products Affected

No product.

CWE

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')

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