Production Line Camera Flaws Allow Hackers to Disable Recordings

Nozomi Networks Labs has uncovered four severe vulnerabilities in the Inaba Denki Sangyo Co., Ltd. IB-MCT001, a camera widely used in Japanese production plants for recording production stoppages.

These security flaws, which remain unpatched, pose significant risks to industrial environments, potentially allowing unauthorized remote access and manipulation of critical production data.

The CHOCO TEI WATCHER mini (IB-MCT001) is designed to capture and analyze brief production interruptions, known as “choco tei,” to improve manufacturing efficiency.

However, the discovered vulnerabilities could enable malicious actors to bypass authentication, access live footage covertly, and even disrupt the recording of production line stoppages.

Implications for Industrial Security

The most severe implications of these vulnerabilities include the possibility of covert surveillance of production lines and disruption of stoppage recordings.

An unauthenticated attacker could potentially monitor live camera feeds remotely, facilitating industrial espionage and compromising proprietary manufacturing processes.

Furthermore, the ability to manipulate or delete recorded footage could hinder the analysis of operational inefficiencies, leading to prolonged downtime and increased costs.

What makes these vulnerabilities particularly concerning is that they can be exploited remotely without requiring authentication or user interaction.

This means that any IB-MCT001 device exposed to the internet or accessible from an internal network becomes a potential target for exploitation.

Vulnerability Details

The four vulnerabilities affecting all versions of the Inaba Denki Sangyo Co., Ltd. IB-MCT001 are as follows:

CVE ID	CWE	CVSS v3.1 Base Score	CVSS v3.1 Vector
CVE-2025-25211	Weak password requirements (CWE-521)	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVE-2025-26689	Forced browsing (CWE-425)	9.8	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVE-2025-24517	Use of client-side authentication (CWE-603)	7.5	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N
CVE-2025-24852	Storing passwords in a recoverable format (CWE-257)	4.6	CVSS:3.1/AV:P/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N

As the vendor has been unable to develop patches for these vulnerabilities, organizations using the IB-MCT001 must implement mitigations to protect their systems.

Nozomi Networks Labs recommends restricting and monitoring network access to the device’s management web application, placing the device on a secured, isolated network, and implementing strict firewall rules.

For vulnerabilities requiring physical access, such as CVE-2025-24852, the device should be installed in a secure, restricted area accessible only to authorized personnel.

Organizations seeking further guidance can refer to the official security advisories from the vendor, JPCERT/CC (JVNVU#91154745), and CISA (ICSA-25-084-04) for more detailed mitigation strategies.

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