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.

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Attack Requirements None

User Interaction None

Vulnerable System Confidentiality Impact High

Vulnerable System Integrity Impact High

Vulnerable System Availability Impact High

Subsequent System Confidentiality Impact None

Subsequent System Integrity Impact None

Subsequent System Availability Impact None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

Attack Vector Network

Attack Complexity Low

Privileges Required Low

Scope Unchanged

Confidentiality Impact High

Integrity Impact High

Availability Impact High

User Interaction None

Access Vector Network

Access Complexity Low

Authentication Single

Confidentiality Impact Complete

Integrity Impact Complete

Availability Impact Complete

This CVE is not in the KEV list.

No EPSS score available.

Key SSVC decision points have not yet been added.

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions
GL.iNet GL-MT3000 affected
Version Status Constraints
4.4.0 affected —
4.4.1 affected —
4.4.2 affected —
4.4.3 affected —
4.4.4 affected —
4.4.5 affected —
4.7 unaffected —

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No data.

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Project Subscriptions

Vendors Products
Gl-inet Subscribe
Gl-mt3000 Firmware Subscribe
Advisories

No advisories yet.

Fixes

Solution

No solution given by the vendor.

Workaround

No workaround given by the vendor.

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

Sun, 14 Jun 2026 22:30:00 +0000

Type Values Removed Values Added
Description 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.
Title GL.iNet GL-MT3000 Online Firmware Upgrade one_click_upgrade command injection
First Time appeared Gl-inet
Gl-inet gl-mt3000 Firmware
Weaknesses CWE-74
CWE-77
CPEs cpe:2.3:o:gl-inet:gl-mt3000_firmware:*:*:*:*:*:*:*:*
Vendors & Products Gl-inet
Gl-inet gl-mt3000 Firmware
References
Metrics cvssV2_0

{'score': 9, 'vector': 'AV:N/AC:L/Au:S/C:C/I:C/A:C/E:POC/RL:OF/RC:C'}

cvssV3_0

{'score': 8.8, 'vector': 'CVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C'}

cvssV3_1

{'score': 8.8, 'vector': 'CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C'}

cvssV4_0

{'score': 8.7, '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'}

Projects

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cve-icon MITRE

Status: PUBLISHED

Assigner: VulDB

Published:

Updated: 2026-06-14T22:00:09.360Z

Reserved: 2026-06-14T06:30:11.012Z

Link: CVE-2026-12187

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Received

Published: 2026-06-14T23:16:34.853

Modified: 2026-06-14T23:16:34.853

Link: CVE-2026-12187

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

Updated: 2026-06-14T23:30:06Z

Weaknesses