CVE-2025-26412

Undocumented Root Shell Access in SIMCom SIM7600G Modem

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.

Remediation

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.

Category

6.8
CVSS
Severity: Medium
CVSS 3.1 •
EPSS 0.02%
Affected: SIMCom SIM7600G Modem
Published at:
Updated at:

References

Link Tags
https://r.sec-consult.com/simcom
http://seclists.org/fulldisclosure/2025/Jun/17

Frequently Asked Questions

What is the severity of CVE-2025-26412?
CVE-2025-26412 has been scored as a medium severity vulnerability.
How to fix CVE-2025-26412?
To fix CVE-2025-26412: 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.
Is CVE-2025-26412 being actively exploited in the wild?
As for now, there are no information to confirm that CVE-2025-26412 is being actively exploited. According to its EPSS score, there is a ~0% probability that this vulnerability will be exploited by malicious actors in the next 30 days.
What software or system is affected by CVE-2025-26412?
CVE-2025-26412 affects SIMCom SIM7600G Modem.
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