TI-2026-10479 Aliases CVE-2026-12187 GHSA-8rqp-5vg5-cv68

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

HIGH 73CWE-74Published 2026-06-14 · Updated 2026-06-15

Key facts

Attack vector: Network
Privileges required: Low
User interaction: None
Attack complexity: Low
Attack requirements: None
Impact type: Code execution
Confidentiality · integrity · availability: High · High · High
Fix status: Fixed

Attack profile from CVSS 4.0 · CNA. Fix status from CNA. Impact type from CWE-77.

Summary

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.

Why it matters now

Exploitation Proof of concept CISA SSVC · not in CISA KEV

EPSS 0.0194 80th percentileScored 2026-11-07

Public exploit Yes 1 exploit referenceTagged by the CNA

Fix Fixed GL-MT3000 (GL.iNet): 4.7

SSVC decision points

CISA ADP · SSVC 2.0.3

Exploitation: Poc
Automatable: No
Technical impact: Total

The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.

Affected products

Vendor	Product	Affected versions	Fixed in	Status	Source
GL.iNet	GL-MT3000	4.4.0; 4.4.1; 4.4.2; 4.4.3; 4.4.4; 4.4.5	4.7	Patch available	CNA

GL-MT3000 VendorGL.iNet Affected 4.4.0; 4.4.1; 4.4.2; 4.4.3; 4.4.4; 4.4.5 Fixed in 4.7 Patch available CNA

CPE names CNA · 1

CPE	Versions	Role	Vendor
cpe:2.3:o:gl-inet:gl-mt3000_firmware::::::::	—	—	GL.iNet

cpe:2.3:o:gl-inet:gl-mt3000_firmware:*:*:*:*:*:*:*:* Versions — — ·GL.iNet

Remediation

Fix · CNA GL-MT3000 (GL.iNet) Fixed in 4.7

Timeline

2026-10-02 Threatist record created from CVE-2026-12187
2026-10-03 Alias added: GHSA-8rqp-5vg5-cv68

References

Exploit 1

https://github.com/StrTzz123/iot_vul/tree/main/GL-iNet/MT3000/4.4.5/upgrade_online_url

Patch 1

https://fw.gl-inet.com/firmware/mt3000/release/mt3000-4.8.1-0819-1755615825.tar

TI-2026-21387 GL-iNet GL-AR300M16 v4.3.11 was discovered to contain a command injection vulnerability… CVSS 3.1CRITICAL 9.8
TI-2024-26219 GL-iNet products AR750/AR750S/AR300M/AR300M16/MT300N-V2/B1300/MT1300/SFT1200/X750… CVSS 3.1CRITICAL 9.8
TI-2023-27815 An issue was discovered on GL.iNet devices before version 4.5.0. CVSS 3.1CRITICAL 9.8
TI-2023-15082 An issue was discovered on GL.iNet devices before 3.216. CVSS 3.1CRITICAL 9.8
TI-2023-14015 GL.iNET MT3000 4.1.0 Release 2 is vulnerable to OS Command Injection via /usr/lib/oui-httpd/rpc/logread. CVSS 3.1CRITICAL 9.8
TI-2026-15312 GL.iNet GL-MT3000 nas-web RPC Wrapper glc nas-web.add_user command injection CVSS 4.0CRITICAL 9.3

See all 92 →

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences