Johnson Controls EasyIO Neo Series EC and CW Controllers
CISA discloses low-severity information exposure CVE-2026-64892 in Johnson Controls EasyIO Neo EC and CW controllers.
CISA republished Johnson Controls advisory JCI-PSA-2026-20 covering information exposure in EasyIO Neo Series EC and CW controllers. CVE-2026-64892 (CWE-200) could let an attacker obtain sensitive information useful for further attacks against the building-automation system. Affected versions are EC V3.3b62 and V3.3b63 and CW V3.3b24 and V3.3b25. CVSS v3.1 is 3.5 (low), and CISA reports no known public exploitation.
- CVE-2026-64892 exposes sensitive information that could enable follow-on attacks.
- Same EasyIO Neo EC and CW builds as the related cleartext issue.
- CVSS v3.1 is 3.5 and requires high privileges plus user interaction.
- CISA reports no known public exploitation of this flaw.
Vulnerabilities mentionedAll →
- CVE-2026-648926.3—Sensitive data exposure in Johnson Controls Easy IO Neopublished · Johnson Controls Easy IO Neo (EC and CW series)
| CVE | Vulnerability | CVSS | EPSS | Flags | Affected | Exposure | Published |
|---|---|---|---|---|---|---|---|
| CVE-2026-64892 | Sensitive data exposure in Johnson Controls Easy IO Neo Johnson Controls Easy IO Neo building controllers before version 3.3b63 expose sensitive information that can be collected from common resource locations. The issue is reachable over the network with low complexity and no extra attack requirements, but it needs high privileges and only passive user interaction. On the controller itself the impact is limited (low confidentiality and availability, no integrity loss), yet data obtained this way can lead to high confidentiality, integrity, and availability impact on subsequent systems. Easy IO Neo Series EC and CW controllers running firmware older than 3.3b63 are affected. It is not listed in CISA KEV, and no public proof-of-concept is known. Upgrade every Easy IO Neo controller (EC and CW series) to version 3.3b63 or later. Until then, limit management access to trusted networks and review privileged accounts, because exposed data can have high impact on systems reached after the controller. |
Full article532 words · extracted from cisa.gov · click to collapse
Summary
Successful exploitation of this vulnerability could allow an attacker to gain access to sensitive information that could be used to conduct further attacks against the system.
The following versions of Johnson Controls EasyIO Neo Series EC and CW Controllers are affected:
- EasyIO Neo Series EC Controllers V3.3b63 (CVE-2026-64892)
- EasyIO Neo Series EC Controllers V3.3b62 (CVE-2026-64892)
- EasyIO Neo Series CW Controllers V3.3b25 (CVE-2026-64892)
- EasyIO Neo Series CW Controllers V3.3b24 (CVE-2026-64892)
| CVSS | Vendor | Equipment | Vulnerabilities |
|---|---|---|---|
| v3 3.5 | Johnson Controls | Johnson Controls EasyIO Neo Series EC and CW Controllers | Exposure of Sensitive Information to an Unauthorized Actor |
Background
- Critical Infrastructure Sectors: Critical Manufacturing, Commercial Facilities, Government Services and Facilities, Transportation Systems, Energy
- Countries/Areas Deployed: Worldwide
- Company Headquarters Location: Ireland
Vulnerabilities
CVE-2026-64892
Johnson Controls is aware of a vulnerability in EasyIO Neo Series EC and CW Controllers relating to an attacker gaining access to sensitive information that could be used to conduct further attacks against the system. The EC and CW are programmable edge controllers designed for building automation and control systems, used to manage and automate various building functions including HVAC, lighting, and energy management, supporting open protocols such as BACnet and Modbus for adaptable system connections.
Affected Products
Johnson Controls EasyIO Neo Series EC and CW Controllers
Vendor:
Johnson Controls
Product Version:
Johnson Controls EasyIO Neo Series EC Controllers: V3.3b63, Johnson Controls EasyIO Neo Series EC Controllers: V3.3b62, Johnson Controls EasyIO Neo Series CW Controllers: V3.3b25, Johnson Controls EasyIO Neo Series CW Controllers: V3.3b24
Product Status:
known_affected
Relevant CWE: CWE-200 Exposure of Sensitive Information to an Unauthorized Actor
Metrics
| CVSS Version | Base Score | Base Severity | Vector String |
|---|---|---|---|
| 3.1 | 3.5 | LOW | CVSS:3.1/AV:N/AC:L/PR:H/UI:R/S:U/C:L/I:N/A:L |
| 4.0 | 4.8 | MEDIUM | CVSS:4.0/AV:N/AC:L/AT:N/PR:H/UI:P/VC:L/VI:N/VA:L/SC:N/SI:N/SA:N |
Acknowledgments
- Gabriele Gardois reported this vulnerability to Johnson Controls
Legal Notice and Terms of Use
This product is provided subject to this Notification (https://www.cisa.gov/notification) and this Privacy & Use policy (https://www.cisa.gov/privacy-policy).
Recommended Practices
CISA recommends users take defensive measures to minimize the risk of exploitation of this vulnerability. CISA reminds organizations to perform proper impact analysis and risk assessment prior to deploying defensive measures.
The recommendations provided within Johnson Controls Hardening Guide should always be applied to minimize security risk. Visit the Johnson Controls Trust Center Cybersecurity website to access the latest Hardening Guidelines and cybersecurity best practices - https://www.johnsoncontrols.com/trust-center/cybersecurity/security-advisories .
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.
Revision History
- Initial Release Date: 2026-10-01
| Date | Revision | Summary |
|---|---|---|
| 2026-10-01 | 1 | Initial Republication of Johnson Controls Product Security Advisory JCI-PSA-2026-20 |