OTPulse

Johnson Controls OpenBlue Mobile Web Application for OpenBlue Workplace

Plan PatchCVSS 9.3ICS-CERT ICSA-25-338-03Dec 4, 2025
Johnson Controls
Attack path
Attack VectorNetwork
Auth RequiredNone
ComplexityLow
User InteractionNone needed
Summary

OpenBlue Mobile Web Application for OpenBlue Workplace versions 2025.1.2 and earlier contain an authentication bypass vulnerability (CWE-425) that allows an unauthenticated attacker to access sensitive information. The vulnerability affects the Mobile Application interface, exposing facility management data such as building automation settings, occupancy information, and system configurations without requiring valid credentials. The primary Workplace web interface is not affected by this vulnerability. Johnson Controls has released a patch (version 2025.1.3) to address this issue.

What this means
What could happen
An attacker without credentials could gain unauthorized access to sensitive information in your OpenBlue Workplace facility management system, including occupancy data, building automation settings, and potentially energy management controls. This could expose operational details of your building systems or enable further reconnaissance for follow-on attacks.
Who's at risk
Facility managers and building operations teams using Johnson Controls OpenBlue Workplace for building automation and facility management. This affects organizations that rely on the Mobile Web Application for remote access to HVAC, lighting, energy management, and occupancy control systems in office buildings, campuses, or multi-site operations.
How it could be exploited
An attacker on the network (or from the internet if the OpenBlue Mobile Web Application is exposed) sends a specially crafted request to the Mobile Application without authentication. The application fails to properly validate access, allowing the attacker to retrieve sensitive information about your facility, building automation, or operational systems.
Prerequisites
  • Network access to the OpenBlue Mobile Web Application port (typically HTTP/HTTPS)
  • No authentication credentials required
  • Mobile Application must be deployed and enabled in IIS
remotely exploitableno authentication requiredlow complexityaffects facility control systemssensitive operational data exposure
Exploitability
Unlikely to be exploited — EPSS score 0.1%
Affected products (1)
ProductAffected VersionsFix Status
OpenBlue Mobile Web Application for OpenBlue Workplace: <=2025.1.2≤ 2025.1.22025.1.3
Remediation & Mitigation
0/5
Do now
0/4
WORKAROUNDDisable the Mobile Application in Microsoft Internet Information Services (IIS) at the application pool level until patch 2025.1.3 is available
HARDENINGRestrict network access to the OpenBlue Mobile Web Application to authorized internal networks only using firewall rules
HARDENINGEnsure OpenBlue Workplace systems are not directly accessible from the internet; place behind firewalls and network segmentation
WORKAROUNDUse the primary OpenBlue Workplace web interface for operations instead of the Mobile Application until patched
Schedule — requires maintenance window
0/1

Patching may require device reboot — plan for process interruption

HOTFIXUpgrade OpenBlue Mobile Web Application to version 2025.1.3 or later
View full CISA ICS-CERT advisory
API: /api/v1/advisories/3a0ceeef-0b0c-4975-8446-d06f9aaef595

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