CISA Advisory: Trane Tracer SC/SC+/Concierge Vulnerabilities
Summary
CISA issued an advisory regarding multiple vulnerabilities (CVE-2026-28252, CVE-2026-28253, CVE-2026-28254) affecting Trane Tracer SC, Tracer SC+, and Tracer Concierge systems. Exploitation could lead to sensitive information disclosure, arbitrary command execution, or denial-of-service.
What changed
CISA has released an Industrial Control System (ICS) Advisory (ICSA-26-071-01) detailing critical vulnerabilities affecting Trane Tracer SC, Tracer SC+, and Tracer Concierge systems. The vulnerabilities, including use of broken cryptography, excessive memory allocation, missing authorization, and hard-coded credentials, carry a CVSS v3 base score of 8.1 and could allow attackers to bypass authentication, execute arbitrary commands, disclose sensitive information, or perform denial-of-service attacks. The advisory specifically lists affected product versions and provides remediation information from Trane, including updated software versions.
Organizations utilizing these Trane systems, particularly within the Critical Manufacturing sector and deployed worldwide, should immediately review their configurations and apply the vendor-provided fixes. Failure to address these vulnerabilities could result in significant operational disruption and security breaches. While no specific compliance deadline is mentioned, prompt patching is strongly recommended to mitigate the risk of exploitation.
What to do next
- Review affected Trane Tracer SC, SC+, and Concierge systems for vulnerable versions.
- Apply vendor-provided patches and updates to mitigate identified vulnerabilities.
- Implement enhanced monitoring for suspicious activity on affected systems.
Source document (simplified)
ICS Advisory
Trane Tracer SC, Tracer SC+, and Tracer Concierge
Release Date
March 12, 2026
Alert Code ICSA-26-071-01 Related topics: Industrial Control System Vulnerabilities, Industrial Control Systems View CSAF
Summary
Successful exploitation of these vulnerabilities could allow an attacker to disclose sensitive information, execute arbitrary commands, or perform a denial-of-service on the product.
The following versions of Trane Tracer SC, Tracer SC+, and Tracer Concierge are affected:
- Tracer SC
- Tracer SC+
- Tracer Concierge
| CVSS | Vendor | Equipment | Vulnerabilities |
| --- | --- | --- | --- |
| v3 8.1 | Trane | Trane Tracer SC, Tracer SC+, and Tracer Concierge | Use of a Broken or Risky Cryptographic Algorithm, Memory Allocation with Excessive Size Value, Missing Authorization, Use of Hard-coded Credentials, Use of Hard-coded, Security-relevant Constants |
Background
- Critical Infrastructure Sectors: Critical Manufacturing
- Countries/Areas Deployed: Worldwide
- Company Headquarters Location: Ireland
Vulnerabilities
CVE-2026-28252
A Use of a Broken or Risky Cryptographic Algorithm vulnerability in Trane Tracer SC, Tracer SC+, and Tracer Concierge could allow an attacker to bypass authentication and gain root-level access to the device.
Affected Products
Trane Tracer SC, Tracer SC+, and Tracer Concierge
Vendor:
Trane Product Version:
Trane Tracer SC: <v4.4SP7, Trane Tracer SC+: <v6.3.2310, Trane Tracer Concierge: <v6.3.2310 Product Status:
knownaffected
Remediations
Vendor fix
Trane has released the following versions of Tracer SC+ for users to upgrade to:
Vendor fix
CVE-2026-28252, CVE-2026-28253, CVE-2026-28254: Tracer SC+ version v6.30.2313
Relevant CWE: CWE-327 Use of a Broken or Risky Cryptographic Algorithm
Metrics
| CVSS Version | Base Score | Base Severity | Vector String |
| --- | --- | --- | --- |
| 3.0 | 8.1 | HIGH | CVSS:3.0/AV:N/AC:H/PR:N/UI:N/S:U/C:H/I:H/A:H |
CVE-2026-28253
A Memory Allocation with Excessive Size Value vulnerability in Trane Tracer SC, Tracer SC+, and Tracer Concierge could allow an unauthenticated attacker to cause a denial-of-service condition.
Affected Products
Trane Tracer SC, Tracer SC+, and Tracer Concierge
Vendor:
Trane Product Version:
Trane Tracer SC: <v4.4SP7, Trane Tracer SC+: <v6.3.2310, Trane Tracer Concierge: <v6.3.2310 Product Status:
knownaffected
Remediations
Vendor fix
Trane has released the following versions of Tracer SC+ for users to upgrade to:
Vendor fix
CVE-2026-28252, CVE-2026-28253, CVE-2026-28254: Tracer SC+ version v6.30.2313
Relevant CWE: CWE-789 Memory Allocation with Excessive Size Value
Metrics
| CVSS Version | Base Score | Base Severity | Vector String |
| --- | --- | --- | --- |
| 3.0 | 7.5 | HIGH | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H |
CVE-2026-28254
A Missing Authorization vulnerability in Trane Tracer SC, Tracer SC+, and Tracer Concierge could allow an unauthenticated attacker to access sensitive information through unprotected APIs.
Affected Products
Trane Tracer SC, Tracer SC+, and Tracer Concierge
Vendor:
Trane Product Version:
Trane Tracer SC: <v4.4SP7, Trane Tracer SC+: <v6.3.2310, Trane Tracer Concierge: <v6.3.2310 Product Status:
knownaffected
Remediations
Vendor fix
Trane has released the following versions of Tracer SC+ for users to upgrade to:
Vendor fix
CVE-2026-28252, CVE-2026-28253, CVE-2026-28254: Tracer SC+ version v6.30.2313
Relevant CWE: CWE-862 Missing Authorization
Metrics
| CVSS Version | Base Score | Base Severity | Vector String |
| --- | --- | --- | --- |
| 3.0 | 5.8 | MEDIUM | CVSS:3.0/AV:N/AC:L/PR:N/UI:N/S:C/C:L/I:N/A:N |
CVE-2026-28255
A Use of Hard-coded Credentials vulnerability in Trane Tracer SC, Tracer SC+, and Tracer Concierge could allow an attacker to disclose sensitive information and take over accounts.
Affected Products
Trane Tracer SC, Tracer SC+, and Tracer Concierge
Vendor:
Trane Product Version:
Trane Tracer SC: <v4.4SP7, Trane Tracer SC+: <v6.3.2310, Trane Tracer Concierge: <v6.3.2310 Product Status:
knownaffected
Remediations
Vendor fix
Trane has released the following versions of Tracer SC+ for users to upgrade to:
Mitigation
CVE-2026-28255: Trane has implemented enhanced cloud security controls to mitigate this vulnerability.
Relevant CWE: CWE-798 Use of Hard-coded Credentials
Metrics
| CVSS Version | Base Score | Base Severity | Vector String |
| --- | --- | --- | --- |
| 3.1 | 6.8 | MEDIUM | CVSS:3.1/AV:N/AC:L/PR:H/UI:N/S:C/C:H/I:N/A:N |
CVE-2026-28256
A Use of Hard-coded, Security-relevant Constants vulnerability in Trane Tracer SC, Tracer SC+, and Tracer Concierge could allow an attacker to disclose sensitive information and take over accounts.
Affected Products
Trane Tracer SC, Tracer SC+, and Tracer Concierge
Vendor:
Trane Product Version:
Trane Tracer SC: <v4.4SP7, Trane Tracer SC+: <v6.3.2310, Trane Tracer Concierge: <v6.3.2310 Product Status:
knownaffected
Remediations
Vendor fix
Trane has released the following versions of Tracer SC+ for users to upgrade to:
Mitigation
CVE-2026-28256: Trane has implemented enhanced security controls which have been communicated to their customers. For more information, contact Trane.
Relevant CWE: CWE-547 Use of Hard-coded, Security-relevant Constants
Metrics
| CVSS Version | Base Score | Base Severity | Vector String |
| --- | --- | --- | --- |
| 3.1 | 5.8 | MEDIUM | CVSS:3.1/AV:N/AC:H/PR:H/UI:N/S:C/C:H/I:N/A:N |
Acknowledgments
- Noam Moshe of Claroty reported these vulnerabilities to CISA
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 these vulnerabilities, 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 these vulnerabilities has been reported to CISA at this time.
Revision History
- Initial Release Date: 2026-03-12
| Date | Revision | Summary |
| --- | --- | --- |
| 2026-03-12 | 1 | Initial Publication |
Legal Notice and Terms of Use
This product is provided subject to this Notification and this Privacy & Use policy.
Vendor
- Trane
Tags
Sector: Critical Manufacturing Sector Topics: Industrial Control System Vulnerabilities, Industrial Control Systems
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