The SIMCom SIM7600G modem supports an undocumented AT command, which allows an attacker to execute system commands with root permission on the modem. An attacker needs either physical access or remote shell access to a device that interacts directly with the modem via AT commands.
Fixes

Solution

The vendor was unresponsive to multiple communication attempts during over one year of responsible disclosure after submitting the technical details to them. It is unknown to SEC Consult whether a patch is available. Customers of SIMCom are urged to reach out to their contact person at SIMCom or distributors to demand a patch which removes the backdoor command.


Workaround

No workaround given by the vendor.

History

Sun, 13 Jul 2025 13:45:00 +0000

Type Values Removed Values Added
Metrics epss

{'score': 0.00025}

epss

{'score': 0.00028}


Wed, 18 Jun 2025 05:45:00 +0000

Type Values Removed Values Added
References

Wed, 11 Jun 2025 14:15:00 +0000

Type Values Removed Values Added
Metrics cvssV3_1

{'score': 6.8, 'vector': 'CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H'}

ssvc

{'options': {'Automatable': 'no', 'Exploitation': 'poc', 'Technical Impact': 'total'}, 'version': '2.0.3'}


Wed, 11 Jun 2025 08:45:00 +0000

Type Values Removed Values Added
Description The SIMCom SIM7600G modem supports an undocumented AT command, which allows an attacker to execute system commands with root permission on the modem. An attacker needs either physical access or remote shell access to a device that interacts directly with the modem via AT commands.
Title Undocumented Root Shell Access in SIMCom SIM7600G Modem
Weaknesses CWE-912
References

cve-icon MITRE

Status: PUBLISHED

Assigner: SEC-VLab

Published:

Updated: 2025-06-18T04:08:24.730Z

Reserved: 2025-02-10T07:48:38.352Z

Link: CVE-2025-26412

cve-icon Vulnrichment

Updated: 2025-06-18T04:08:24.730Z

cve-icon NVD

Status : Awaiting Analysis

Published: 2025-06-11T09:15:22.067

Modified: 2025-06-18T05:15:48.290

Link: CVE-2025-26412

cve-icon Redhat

No data.

cve-icon OpenCVE Enrichment

No data.