CVE-2026-18601: Command Injection in GL.iNet GL-MT3000
A vulnerability was found in GL.iNet GL-MT3000 up to 4.4.5. This impacts the function ovpn-client.check_config of the file /cgi-bin/glc of the component ovpn-client.so Native Plugin. Performing a manipulation of the argument filename results in command injection. Remote exploitation of the attack is possible. The exploit has been made public and could be used. The vendor was contacted early about this disclosure and confirmed the existence of the vulnerability.
AI Analysis
Technical Summary
This vulnerability allows an unauthenticated remote attacker to perform command injection by manipulating the filename argument in the ovpn-client.check_config function of the ovpn-client.so Native Plugin on GL.iNet GL-MT3000 devices running firmware versions 4.4.0 to 4.4.5. The issue resides in the /cgi-bin/glc endpoint. The vendor acknowledged the vulnerability, and a public exploit exists. The CVSS 4.0 base score is 9.3, indicating critical severity with network attack vector, low attack complexity, no privileges or user interaction required, and high impact on confidentiality, integrity, and availability.
Potential Impact
Successful exploitation results in remote command execution on the affected device without authentication, potentially allowing full control over the device. This compromises confidentiality, integrity, and availability of the system. The vulnerability affects multiple firmware versions up to 4.4.5.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict access to the device management interface from untrusted networks to reduce exposure. Monitor vendor communications for updates on patches or mitigations.
CVE-2026-18601: Command Injection in GL.iNet GL-MT3000
Description
A vulnerability was found in GL.iNet GL-MT3000 up to 4.4.5. This impacts the function ovpn-client.check_config of the file /cgi-bin/glc of the component ovpn-client.so Native Plugin. Performing a manipulation of the argument filename results in command injection. Remote exploitation of the attack is possible. The exploit has been made public and could be used. The vendor was contacted early about this disclosure and confirmed the existence of the vulnerability.
CVSS v4.0
Score 9.3critical
Affected software
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability allows an unauthenticated remote attacker to perform command injection by manipulating the filename argument in the ovpn-client.check_config function of the ovpn-client.so Native Plugin on GL.iNet GL-MT3000 devices running firmware versions 4.4.0 to 4.4.5. The issue resides in the /cgi-bin/glc endpoint. The vendor acknowledged the vulnerability, and a public exploit exists. The CVSS 4.0 base score is 9.3, indicating critical severity with network attack vector, low attack complexity, no privileges or user interaction required, and high impact on confidentiality, integrity, and availability.
Potential Impact
Successful exploitation results in remote command execution on the affected device without authentication, potentially allowing full control over the device. This compromises confidentiality, integrity, and availability of the system. The vulnerability affects multiple firmware versions up to 4.4.5.
Mitigation Recommendations
Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Until an official fix is released, restrict access to the device management interface from untrusted networks to reduce exposure. Monitor vendor communications for updates on patches or mitigations.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- VulDB
- Date Reserved
- 2026-08-03T06:55:23.055Z
- Cvss Version
- 4.0
- State
- PUBLISHED
- Remediation Level
- null
Threat ID: 6a7098b0bf32cb7a34a822b9
Added to database: 08/03/2026, 13:33:36 UTC
Last enriched: 08/03/2026, 13:52:38 UTC
Last updated: 08/04/2026, 03:17:46 UTC
Views: 7
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