Johnson Controls OpenBlue Mobile Web Application for OpenBlue Workplace

View CSAF

1. EXECUTIVE SUMMARY CVSS v4 6.5 ATTENTION: Exploitable remotely/low attack complexity Vendor: Johnson Controls Inc. Equipment: OpenBlue Mobile Web Application for OpenBlue Workplace Vulnerability: Direct Request (‘Forced Browsing’)
2. RISK EVALUATION Successful exploitation of this vulnerability could allow an attacker to gain unauthorized access to sensitive information.
3. TECHNICAL DETAILS 3.1 AFFECTED PRODUCTS The following versions of Johnson Controls OpenBlue Mobile Web Application for OpenBlue Workplace are affected: OpenBlue Mobile Web Application for OpenBlue Workplace: Version 2025.1.2 and prior 3.2 VULNERABILITY OVERVIEW 3.2.1 DIRECT REQUEST (‘FORCED BROWSING’) CWE-425 Johnson Controls OpenBlue Mobile Web Application for OpenBlue Workplace versions 2025.1.2 and prior are vulnerable to a Direct Request exploit that could allow an attacker to gain unauthorized access to sensitive information. CVE-2025-26381 has been assigned to this vulnerability. A CVSS v3.1 base score of 9.3 has been calculated; the CVSS vector string is (AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:L/A:N). A CVSS v4 score has also been calculated for CVE-2025-26381. A base score of 6.5 has been calculated; the CVSS vector string is (AV:N/AC:L/AT:P/PR:N/UI:N/VC:H/VI:L/VA:N/SC:H/SI:L/SA:N/E:U). 3.3 BACKGROUND CRITICAL INFRASTRUCTURE SECTORS: Commercial Facilities, Critical Manufacturing, Energy, Government Services and Facilities, Transportation Systems COUNTRIES/AREAS DEPLOYED: Worldwide COMPANY HEADQUARTERS LOCATION: Ireland 3.4 RESEARCHER Johnson Controls Inc. reported this vulnerability to CISA.
4. MITIGATIONS Johnson Controls Inc. recommends the following: Upgrade to patch level 2025.1.3 or above when available. Note: When this patch is applied, skip the below two steps. Disable the Mobile Application in Microsoft Internet Information Services (IIS) or Disable the mobile application within Microsoft Internet Information Services (IIS) at the application pool level. Use the primary OpenBlue Workplace web interface: To complete the tasks you’ve previously accomplished in OpenBlue Workplace Mobile interface, the primary Workplace web interface provides a subset of the Mobile functionality and is available here: [base url]/FMInteract/Default.aspx?DashboardType=Homepage. For more detailed mitigation instructions, please see Johnson Controls Product Security Advisory JCI-PSA-2025-05 v1 at the following location: https://www.johnsoncontrols.com/cyber-solutions/security-advisories 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. No known public exploitation specifically targeting this vulnerability has been reported to CISA at this time.
5. UPDATE HISTORY December 04, 2025: Initial Republication of JCI-PSA-2025-05