CVE-2026-18601 Details
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.
A command injection vulnerability has been identified in the GL.iNet GL-MT3000 router, affecting versions through 4.4.5. The issue arises in the OpenVPN client native plugin, specifically within the 'check_config' function of the '/cgi-bin/glc' endpoint. The vulnerability allows for remote exploitation without authentication, leading to unauthorized command execution with root privileges. The flaw is caused by improper handling of the 'filename' parameter, which is manipulated to inject and execute arbitrary commands on the device.
Metrics
CVSS 4.0 Severity and Vector Strings:
VolerionCVSS 3.x Severity and Vector Strings:
No data available for CVSS Version 2.0 on this CVE.
Volerion
Assessed Aug 3, 2026CISA-ADP
Assessed Aug 3, 2026References to Advisories, Solutions, and Tools
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| URL | Source(s) | Tag(s) |
|---|---|---|
| https://github.com/StrTzz123/iot_vul/blob/main/GL-iNet/MT3000/4.4.5/ovpn_check_config_glc_rce/CVE.md | [email protected] | ExploitTechnical Description |
| https://vuldb.com/cve/CVE-2026-18601 | [email protected] | AdvisoryPermission Required |
| https://vuldb.com/submit/851540 | [email protected] | Permission Required |
| https://vuldb.com/vuln/385516 | [email protected] | Permission Required |
| https://vuldb.com/vuln/385516/cti | [email protected] | Content Wall |
Weakness Enumeration
| CWE-ID | CWE Name | Source |
|---|---|---|
| CWE-74 | Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection') | [email protected] |
| CWE-77 | Improper Neutralization of Special Elements used in a Command ('Command Injection') | [email protected] |
Affected Products
| Product | Versions |
|---|---|
| GL.iNet GL-MT3000 | <= 4.4.5 (semver) |
CPE
Remediation
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Change History
2 change records found show changes
| Date | Action | Recorded By |
|---|---|---|
| Aug 3, 2026 | CVE Modified | CISA-ADP |
| Aug 3, 2026 | New CVE Received | [email protected] |