CVE-2026-12187: Command Injection in GL.iNet GL-MT3000
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.
AI Analysis
Technical Summary
CVE-2026-12187 is a command injection vulnerability affecting GL.iNet GL-MT3000 devices with firmware versions 4.4.0 to 4.4.5. The vulnerability resides in an unspecified functionality of the /usr/bin/one_click_upgrade file within the Online Firmware Upgrade Handler component. Successful exploitation allows remote attackers to execute arbitrary commands on the device. The vendor responded quickly and released firmware version 4.7 to fix this issue.
Potential Impact
Remote attackers can exploit this vulnerability to execute arbitrary commands on affected GL-MT3000 devices, potentially leading to full system compromise. The CVSS 4.0 base score is 8.7 (high severity), reflecting the ease of remote exploitation without user interaction and the high impact on confidentiality, integrity, and availability.
Mitigation Recommendations
Upgrade affected GL.iNet GL-MT3000 devices from versions 4.4.0 through 4.4.5 to version 4.7 or later, which contains the official fix for this command injection vulnerability. No other mitigation steps are indicated by the vendor advisory.
CVE-2026-12187: Command Injection in GL.iNet GL-MT3000
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.
CVSS v4.0
Score 8.7high
Affected software
pkg:github/gl.inet/GL-MT3000Run on your own infrastructure? Check whether these packages are installed with threat-finder — our free open-source scanner.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
CVE-2026-12187 is a command injection vulnerability affecting GL.iNet GL-MT3000 devices with firmware versions 4.4.0 to 4.4.5. The vulnerability resides in an unspecified functionality of the /usr/bin/one_click_upgrade file within the Online Firmware Upgrade Handler component. Successful exploitation allows remote attackers to execute arbitrary commands on the device. The vendor responded quickly and released firmware version 4.7 to fix this issue.
Potential Impact
Remote attackers can exploit this vulnerability to execute arbitrary commands on affected GL-MT3000 devices, potentially leading to full system compromise. The CVSS 4.0 base score is 8.7 (high severity), reflecting the ease of remote exploitation without user interaction and the high impact on confidentiality, integrity, and availability.
Mitigation Recommendations
Upgrade affected GL.iNet GL-MT3000 devices from versions 4.4.0 through 4.4.5 to version 4.7 or later, which contains the official fix for this command injection vulnerability. No other mitigation steps are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-06-14T06:30:11.012Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a2f29351cccde5f2644bbd5
Added to database: 06/14/2026, 22:20:37 UTC
Last enriched: 06/14/2026, 22:35:29 UTC
Last updated: 07/31/2026, 19:22:57 UTC
Views: 163
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