FUJIFILM Healthcare Americas Synapse Mobility

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1. EXECUTIVE SUMMARY

• CVSS v4 5.3
• ATTENTION: Exploitable remotely/low attack complexity
• Vendor: FUJIFILM Healthcare Americas Corporation
• Equipment: Synapse Mobility
• Vulnerability: External Control of Assumed-Immutable Web Parameter

2. RISK EVALUATION

Successful exploitation of this vulnerability could allow an attacker to access information beyond their assigned roles.

3. TECHNICAL DETAILS

3.1 AFFECTED PRODUCTS

The following versions of FUJIFILM Healthcare Americas Synapse Mobility are affected:

• Synapse Mobility: Versions prior to 8.2

3.2 VULNERABILITY OVERVIEW

3.2.1 EXTERNAL CONTROL OF ASSUMED-IMMUTABLE WEB PARAMETER CWE-472

FUJIFILM Healthcare Americas Synapse Mobility versions prior to 8.2 contains a privilege escalation vulnerability through external control of Web parameter. Exploitation of this vulnerability could allow an attacker to bypass authentication and access information beyond role-based access controls.

CVE-2025-54551 has been assigned to this vulnerability. A CVSS v3.1 base score of 4.3 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:N/A:N).

A CVSS v4 score has also been calculated for CVE-2025-54551. A base score of 5.3 has been calculated; the CVSS vector string is (AV:N/AC:L/AT:N/PR:L/UI:N/VC:L/VI:N/VA:N/SC:N/SI:N/SA:N).

3.3 BACKGROUND

• CRITICAL INFRASTRUCTURE SECTORS: Healthcare and Public Health
• COUNTRIES/AREAS DEPLOYED: Worldwide
• COMPANY HEADQUARTERS LOCATION: Japan

3.4 RESEARCHER

Christopher Alejandro (Moroco) reported this vulnerability to CISA.

4. MITIGATIONS

FUJIFILM Healthcare Americas has released the following mitigation options for users to follow:

• It is recommended to upgrade to the latest version of the product or any version from 8.2 and later to resolve this issue.
• There is an immediate mitigation available of disabling the search function in the configurator settings. Access to the search function for all users can also be removed by unchecking the "Allow plain text accession number" check box in the security section of the admin interface. This will limit the site to use of the product only via the SecureURL feature.
• Patches have been released which will remediate the vulnerability for software versions 8.0-8.1.1.

FUJIFILM Healthcare Americas strongly encourages users to update the Synapse Mobility application to the latest version if they are past their end of support date.

For more information, refer to Synapse Mobility Vulnerability Notification.

CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability, such as:

• Minimize network exposure for all control system devices and/or systems, ensuring they are not accessible from the internet.
• Locate control system networks and remote devices behind firewalls and isolating them from business networks.
• When remote access is required, use more secure methods, such as Virtual Private Networks (VPNs), recognizing VPNs may have vulnerabilities and should be updated to the most current version available. Also recognize VPN is only as secure as the connected devices.

CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.

CISA also provides a section for control systems security recommended practices on the ICS webpage on cisa.gov/ics. Several CISA products detailing cyber defense best practices are available for reading and download, including Improving Industrial Control Systems Cybersecurity with Defense-in-Depth Strategies.

CISA encourages organizations to implement recommended cybersecurity strategies for proactive defense of ICS assets.

Additional mitigation guidance and recommended practices are publicly available on the ICS webpage at cisa.gov/ics in the technical information paper, ICS-TIP-12-146-01B--Targeted Cyber Intrusion Detection and Mitigation Strategies.

Organizations observing suspected malicious activity should follow established internal procedures and report findings to CISA for tracking and correlation against other incidents.

CISA also recommends users take the following measures to protect themselves from social engineering attacks:

• Do not click web links or open attachments in unsolicited email messages.
• Refer to Recognizing and Avoiding Email Scams for more information on avoiding email scams.
• Refer to Avoiding Social Engineering and Phishing Attacks for more information on social engineering attacks.

No known public exploitation specifically targeting this vulnerability has been reported to CISA at this time.

5. UPDATE HISTORY

• August 21, 2025: Initial Publication

• Fujifilm