CVE-2026-18685

A security vulnerability has been detected in GL.iNet GL-MT3000 up to 4.4.5. Impacted is the function set_upgrade of the file /cgi-bin/glc of the component modem.so. Such manipulation leads to command injection. It is possible to launch the attack remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure and confirmed the existence of the vulnerability.

CVSS v3 9.8 CRITICAL
CVSS v2.0 10.0 HIGH

9.8^/10

CVSS v3 : CRITICAL

Vector :

Exploitability : 3.9 / Impact : 5.9

Attack Vector NETWORK

Attack Complexity LOW

Privileges Required NONE

User Interaction NONE

Confidentiality Impact HIGH

Integrity Impact HIGH

Availability Impact HIGH

Scope UNCHANGED

10.0^/10

CVSS v2.0 : HIGH

Vector : AV:N/AC:L/Au:N/C:C/I:C/A:C

Exploitability : 10.0 / Impact : 10.0

Access Vector NETWORK

Access Complexity LOW

Authentication NONE

Confidentiality Impact COMPLETE

Integrity Impact COMPLETE

Availability Impact COMPLETE

References

Link	Resource
https://github.com/StrTzz123/iot_vul/tree/main/GL-iNet/MT3000/4.4.5/modem_set_upgrade_glc_rce
https://vuldb.com/cve/CVE-2026-18685
https://vuldb.com/submit/851593
https://vuldb.com/vuln/385611
https://vuldb.com/vuln/385611/cti

Configurations

No configuration.

History

23 Oct 2026, 23:10

Type	Values Removed	Values Added
Summary		(es) Se ha detectado una vulnerabilidad de seguridad en GL.iNet GL-MT3000 hasta la versión 4.4.5. Afecta a la función set_upgrade del archivo /cgi-bin/glc del componente modem.so. Dicha manipulación conduce a una inyección de comandos. Es posible lanzar el ataque de forma remota. El exploit ha sido divulgado públicamente y puede ser utilizado. El proveedor fue contactado con antelación sobre esta divulgación y confirmó la existencia de la vulnerabilidad.

Information

Published : 2026-08-04 00:16

Updated : 2026-10-23 23:10

NVD link : CVE-2026-18685

Mitre link : CVE-2026-18685

CVE.ORG link : CVE-2026-18685

JSON object : View

Products Affected

No product.

CWE

CWE-74

Improper Neutralization of Special Elements in Output Used by a Downstream Component ('Injection')

CWE-77

Improper Neutralization of Special Elements used in a Command ('Command Injection')

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Impacted is the function set_upgrade of the file /cgi-bin/glc of the component modem.so. Such manipulation leads to command injection. It is possible to launch the attack remotely. The exploit has been disclosed publicly and may be used. The vendor was contacted early about this disclosure and confirmed the existence of the vulnerability."}, {"lang": "es", "value": "Se ha detectado una vulnerabilidad de seguridad en GL.iNet GL-MT3000 hasta la versi\u00f3n 4.4.5. Afecta a la funci\u00f3n set_upgrade del archivo /cgi-bin/glc del componente modem.so. Dicha manipulaci\u00f3n conduce a una inyecci\u00f3n de comandos. Es posible lanzar el ataque de forma remota. El exploit ha sido divulgado p\u00fablicamente y puede ser utilizado. El proveedor fue contactado con antelaci\u00f3n sobre esta divulgaci\u00f3n y confirm\u00f3 la existencia de la vulnerabilidad."}], "lastModified": "2026-10-23T23:10:00.157", "sourceIdentifier": "cna@vuldb.com"}