EUVD-2025-8847

Comprehensive Technical Analysis of EUVD-2025-8847

1. Vulnerability Assessment and Severity Evaluation

The vulnerability described in EUVD-2025-8847 pertains to a 'Forced Browsing' issue in the CHOCO TEI WATCHER mini (IB-MCT001) device. This vulnerability allows a remote attacker to send specially crafted HTTP requests to the device, potentially leading to unauthorized data access, deletion, or alteration of product settings.

Severity Evaluation:

• Base Score: 9.8 (Critical)
• Base Score Version: 3.1
• Base Score Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H

The CVSS score of 9.8 indicates a critical vulnerability. The high scores for Confidentiality (C:H), Integrity (I:H), and Availability (A:H) imply that the vulnerability can lead to significant data breaches, unauthorized modifications, and potential disruption of services.

2. Potential Attack Vectors and Exploitation Methods

Attack Vectors:

• Remote Exploitation: The vulnerability can be exploited remotely over the network without requiring any user interaction (UI:N) or privileges (PR:N).
• HTTP Request Manipulation: An attacker can craft malicious HTTP requests to access, modify, or delete data on the device.

Exploitation Methods:

• Forced Browsing: By sending specially crafted HTTP requests, an attacker can bypass authentication mechanisms and access restricted resources.
• Data Manipulation: The attacker can alter product settings or delete critical data, leading to operational disruptions.

3. Affected Systems and Software Versions

Affected Systems:

• Device: CHOCO TEI WATCHER mini (IB-MCT001)
• Versions: All versions

Vendor:

• Inaba Denki Sangyo Co., Ltd.

4. Recommended Mitigation Strategies

Immediate Mitigation:

• Network Segmentation: Isolate the affected devices from the broader network to limit the attack surface.
• Firewall Rules: Implement strict firewall rules to block unauthorized access to the device.
• Monitoring: Enhance monitoring and logging to detect and respond to suspicious activities promptly.

Long-Term Mitigation:

• Patch Management: Apply vendor-provided patches as soon as they become available.
• Access Control: Implement robust access control mechanisms to restrict unauthorized access.
• Regular Audits: Conduct regular security audits and vulnerability assessments to identify and mitigate potential risks.

5. Impact on European Cybersecurity Landscape

The vulnerability in the CHOCO TEI WATCHER mini device poses a significant risk to organizations using this equipment, particularly in critical infrastructure sectors such as manufacturing, healthcare, and energy. Unauthorized access to these devices can lead to data breaches, operational disruptions, and potential safety hazards. The European cybersecurity landscape must prioritize addressing such vulnerabilities to ensure the integrity and availability of critical systems.

6. Technical Details for Security Professionals

Vulnerability Details:

• Type: Forced Browsing
• Impact: Unauthorized data access, modification, and deletion; alteration of product settings.
• Exploitation: Remote attacker sends crafted HTTP requests.

References:

• Vendor Advisory: Inaba Denki Sangyo Co., Ltd.
• JVN Advisory: JVNVU91154745
• CISA Advisory: ICSA-25-084-04
• Nozomi Networks Blog: Unpatched Vulnerabilities in Production Line Cameras

Aliases:

• CVE: CVE-2025-26689

Assigner:

• JPCERT

ENISA IDs:

• Product: 7b3429be-f74a-30e6-9314-a504e738cf92
• Vendor: 16c872e2-31d3-326c-8ade-01abea8bcd7a

Conclusion:

The vulnerability in the CHOCO TEI WATCHER mini device is critical and requires immediate attention. Organizations should implement the recommended mitigation strategies to protect their systems and data. Continuous monitoring and regular updates are essential to maintain a robust security posture against such threats.