CVE-2025-26412Public exploit

Root command execution via undocumented AT command

Published Jun 11, 2025 · Updated Jun 18, 2025

Hidden functionality in SIMCom SIM7600G firmware LE20B03SIM7600M21-A allows attackers to execute root commands via AT+CSHELL. The undocumented AT+CSHELL command accepts a quoted operating-system command and runs it with root permissions; a demonstrated id command returns uid 0. Reachability requires physical access to the modem or remote shell access to a device that directly exposes the modem's AT-command interface.

CVSS severity6.8
Medium
EPSS probability0.27%
Next 30 days · Sep 16, 2026
Known exploitationUnconfirmed
Based on sourced intelligence
Hinoki checkNot available
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Summary

What happened

Hidden functionality in SIMCom SIM7600G firmware LE20B03SIM7600M21-A allows attackers to execute root commands via AT+CSHELL. The undocumented AT+CSHELL command accepts a quoted operating-system command and runs it with root permissions; a demonstrated id command returns uid 0. Reachability requires physical access to the modem or remote shell access to a device that directly exposes the modem's AT-command interface.

The record

CVE
CVE-2025-26412
Published
Jun 11, 2025
Updated
Jun 18, 2025
Vendor
SIMCom Wireless Solutions Limited
Product
SIM7600G
Classifications
CWE-912, CAPEC-36, T1059.004
Attack vector
physical
Privileges
unauthenticated

Timeline

How it unfolded

  1. Jun 11, 2025CVE publishedPublication date reported by the CVE source.
  2. Jun 18, 2025Record updatedLatest update available in the CVE record.

Exploitability

Present is not the same as exploitable

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Is a vulnerable build present?

Compare these published version ranges with your installed build and any vendor patches.

  1. Affected versionversion=LE20B03SIM7600M21-A

What conditions does exploitation require?

Attack vectorphysical
Required privilegesunauthenticated

What is affected?

SIMCom Wireless Solutions Limited · SIM7600Gversion=LE20B03SIM7600M21-A

Published CVSS scores

6.8CISA-ADPCVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

CVSS describes severity. EPSS estimates exploitation probability.

Attacks

What attackers are doing with it

Daily unique IPs observed by Shadowserver honeypots for known exploited vulnerabilities (KEVs). Missing observations do not establish an absence of attacks.

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No observations available

Sep 10, 2026Sep 16, 2026
Latest reporting daySep 16, 2026
Latest daily unique IPsUnavailable
Prior 30-day averageUnavailable
SourceShadowserver honeypots (KEV)
Vectorphysical
Privilegesunauthenticated
Known exploitationUnconfirmed
Public exploitPublished

Weakness, pattern, technique

CWE-912Hidden Functionality
CAPEC-36Using Unpublished Interfaces or Functionality
T1059.004Command and Scripting Interpreter: Unix Shell

Public exploit references

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Technologies

Your stack

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Your stack

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