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Vulnerability record · CVE-2026-28256 · published 12 March 2026

CVE-2026-28256: Trane tracer sc\+ firmware vulnerability

Trane · Tracer Sc\+ Firmware

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.

6.9 CVSS 4.0 Medium EPSS 0.44% · top 64.1% CWE-547 · CWE-547
6.9CVSS 4.0 base score
0.44%EPSS exploitation probability, 30 days
NoNot in CISA KEV
3Affected product versions listed by NVD
1References
17 Jun 2026Last modified by NVD

Description

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.

CVSS:4.0/AV:N/AC:H/AT:N/PR:H/UI:N/VC:H/VI:N/VA:N/SC:H/SI:N/SA:N/E:X/CR:X/IR:X/AR:X/MAV:X/MAC:X/MAT:X/MPR:X/MUI:X/MVC:X/MVI:X/MVA:X/MSC:X/MSI:X/MSA:X/S:X/AU:X/R:

Affected products

3 vulnerable configurations from NVD's CPE data, grouped by vendor and product.

References

LinkTags
https://www.cisa.gov/news-events/ics-advisories/icsa-26-071-01 Third Party AdvisoryUS Government Resource

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Related vulnerabilities

Same products first, then exploited flaws of the same weakness class.

9.2CVE-2026-28252Trane tracer sc firmware broken cryptographic algorithm vulnerabilityA Use of a Broken or Risky Cryptographic Algorithm vulnerability in Trane Tracer SC, Tracer SC+, and Tracer Concierge could allow an attacker to bypa…EPSS 0.35%8.8CVE-2021-38450Trane tracer concierge code injection vulnerabilityThe affected controllers do not properly sanitize the input containing code syntax. As a result, an attacker could craft code to alter the intended c…EPSS 1.0%8.7CVE-2026-28253Trane tracer sc firmware vulnerabilityA Memory Allocation with Excessive Size Value vulnerability in Trane Tracer SC, Tracer SC+, and Tracer Concierge could allow an unauthenticated attac…EPSS 0.49%8.2CVE-2026-28255Trane tracer sc firmware hard-coded credentials vulnerabilityA Use of Hard-coded Credentials vulnerability in Trane Tracer SC, Tracer SC+, and Tracer Concierge could allow an attacker to disclose sensitive info…EPSS 0.48%6.9CVE-2026-28254Trane tracer sc firmware missing authorization vulnerabilityA Missing Authorization vulnerability in Trane Tracer SC, Tracer SC+, and Tracer Concierge could allow an unauthenticated attacker to access sensitiv…EPSS 0.42%6.1CVE-2021-42534Trane tracer sc firmware cross-site scripting vulnerabilityThe affected product’s web application does not properly neutralize the input during webpage generation, which could allow an attacker to inject code…EPSS 0.61%

Source: NIST National Vulnerability Database (record CVE-2026-28256), CISA KEV, FIRST EPSS (scores of 2026-09-26). This page is refreshed as NVD updates the record.