CVE-2025-26412VulnerabilityPublished 11 Jun 2025Updated 18 Jun 2025

CVE-2025-26412: SIMCom SIM7600G Modem · Hidden Functionality

Affects SIMCom SIM7600G ModemSource CVE Database V5

Not known to be exploited · CVSS 6.8 Medium.

Data as of 26 Oct 2026, 06:26 UTC

CVSS 3.1 base score

6.8Medium

How severe the flaw is on the 0–10 CVSS scale.

EPSS: 0.2% chance of exploitation in 30 days – higher than 19% of CVEsExploit Prediction Scoring System: the likelihood attackers will use this flaw soon.

CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

Attack Vector: Physical
Attack Complexity: Low
Privileges Required: None
User Interaction: None
Scope: Unchanged
Confidentiality: High
Integrity: High
Availability: High

Bold values are the worst case: easiest to exploit or largest impact.

Attack Vector: Physical: The attack requires the attacker to physically touch or manipulate the vulnerable component. Physical interaction may be brief or persistent.
Attack Complexity: Low: Specialized access conditions or extenuating circumstances do not exist. An attacker can expect repeatable success against the vulnerable component.
Privileges Required: None: The attacker is unauthorized prior to attack, and therefore does not require any access to settings or files to carry out an attack.
User Interaction: None: The vulnerable system can be exploited without any interaction from any user.
Scope: Unchanged: An exploited vulnerability can only affect resources managed by the same security authority. In this case, the vulnerable component and the impacted component are either the same, or both are managed by the same security authority.
Confidentiality: High: There is total loss of confidentiality, resulting in all resources within the impacted component being divulged to the attacker. Alternatively, access to only some restricted information is obtained, but the disclosed information presents a direct, serious impact.
Integrity: High: There is a total loss of integrity, or a complete loss of protection. For example, the attacker is able to modify any/all files protected by the impacted component. Alternatively, only some files can be modified, but malicious modification would present a direct, serious consequence to the impacted component.
Availability: High: There is total loss of availability, resulting in the attacker being able to fully deny access to resources in the impacted component; this loss is either sustained (while the attacker continues to deliver the attack) or persistent (the condition persists even after the attack has completed). Alternatively, the attacker has the ability to deny some availability, but the loss of availability presents a direct, serious consequence to the impacted component (e.g., the attacker cannot disrupt existing connections, but can prevent new connections; the attacker can repeatedly exploit a vulnerability that, in each instance of a successful attack, leaks a only small amount of memory, but after repeated exploitation causes a service to become completely unavailable).

Definitions: FIRST CVSS v3.1 specification.

Exploitation evidence

Disclosed: evidence found.
CVE published 11 Jun 2025
Detectable: no evidence on record.
No public nuclei template indexed
Weaponised: no evidence on record.
No public exploit code indexed in Metasploit or Exploit-DB
Exploited in the wildExploited: no evidence on record.
Not in CISA KEV and no source reports exploitation
Observed by OffSeq MirageSeen by Mirage: no evidence on record.
No attack traffic recorded by OffSeq Mirage sensors

A missing step is not evidence of safety. Sources: cve.org (opens in a new tab), the Metasploit, Exploit-DB and nuclei-templates index as of 2026-10-26.

Disclosed: The CVE record is public on cve.org. Its publication is t = 0.
Detectable: A public nuclei template can find exposed instances, for defenders and attackers alike.
Weaponised: Public exploit code exists in Metasploit or Exploit-DB, or CISA SSVC reports a public proof of concept.
Exploited in the wild: CISA KEV lists it, CISA SSVC rates exploitation active, or a source reports attacks.
Observed by OffSeq Mirage: OffSeq Mirage honeypot sensors recorded attack traffic for this CVE, or found exposed hosts without attack traffic.

Moments are spaced evenly, not to scale; a dashed line marks a gap of six months or more. Deltas count from t = 0. Sources that give only a date (CISA KEV, Exploit-DB, or a time of exactly 00:00Z) read “same day” rather than hours. Metasploit modules carry the flaw’s disclosure date, not their release date, and nuclei templates carry no date, so both appear above but not on the timeline.

What to do

AI-suggested

1. Inventory and Audit: Identify all devices using the SIMCom SIM7600G modem, particularly those running the affected firmware version LE20B03SIM7600M21-A. 2. Access Controls: Restrict physical access to devices containing the modem to trusted personnel only. 3. Network Segmentation: Isolate devices with SIM7600G modems from critical network segments to limit the impact of a potential compromise. 4. Secure Remote Access: Harden remote shell access mechanisms on devices interacting with the modem by enforcing strong authentication, using VPNs, and monitoring for unusual activity. 5. Firmware Updates: Engage with SIMCom or device vendors to obtain firmware updates or patches addressing this vulnerability. If unavailable, consider alternative hardware or firmware versions without this issue. 6. Monitoring and Detection: Implement monitoring for unusual AT command usage or unexpected modem behavior. Use intrusion detection systems to flag suspicious command executions. 7. Incident Response Planning: Prepare response plans for potential exploitation scenarios involving modem compromise. 8. Disable Unused Interfaces: Where possible, disable or restrict AT command interfaces to only authorized commands and users. These steps go beyond generic advice by focusing on controlling access to the modem interfaces, monitoring for exploitation attempts, and emphasizing the importance of firmware management and network architecture adjustments.

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.

Impact

For European organizations, the impact of this vulnerability can be significant, especially for those relying on SIMCom SIM7600G modems in critical infrastructure, industrial IoT deployments, or communication gateways. The ability to execute commands as root on the modem can lead to interception or disruption of cellular communications, potentially affecting data confidentiality and integrity. Attackers could disrupt device availability or use the compromised modem as a foothold to attack connected systems. This is particularly concerning for sectors such as manufacturing, energy, transportation, and smart city deployments where cellular modems are used for remote monitoring and control. The requirement for physical or remote shell access somewhat limits the attack surface; however, in environments where devices are deployed in less secure or remote locations, the risk increases. Additionally, if an attacker gains remote shell access through other vulnerabilities, this modem flaw could be chained to escalate privileges and cause more severe damage. The lack of patches and public exploits means organizations should proactively assess their exposure and implement compensating controls to mitigate potential risks.

CWE-912Hidden Functionality (opens in a new tab)
Class weakness
The product contains functionality that is not documented, not part of the specification, and not accessible through an interface or command sequence that is obvious to the product's users or administrators.
Installation
Always verify the integrity of the product that is being installed.
Attack patterns
Try All Common Switches (opens in a new tab)
Reverse Engineer an Executable to Expose Assumed Hidden Functionality (opens in a new tab)
From MITRE CWE, MITRE CAPEC and OWASP (Top 10, OpenCRE).

References

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Exploitation evidence

What to do

Description

AI analysisMachine-generated, updated 12 Jul 2025, 05:32 UTC

WeaknessesCWE-912

Technical details

References

Community reviews

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