What is CVE-2026-28255?

CVE-2026-28255 is a critical-severity vulnerability in Trane Tracer Concierge, classified under Use of Hard-coded Credentials. CVSS score: 9.8/10. Published 2026-03-12.

How severe is CVE-2026-28255?

Critical severity. CVSS v3 base score is 9.8 out of 10.

Vulnerability in Trane Tracer Concierge

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.

Published 2026-03-12 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 9.8 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H.

EPSS exploit prediction

EPSS: 0.005 (38.8th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 39th percentile — 38.8% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.003 · newest: 0.005 · change: +0.002

Affected products

Weakness classification (CWE)

CWE-798 — Use of Hard-coded Credentials

References

www.cisa.gov/news-events/ics-advisories/icsa-26-071-01 (US Government Resource, Third Party Advisory, government-resource)

Frequently asked questions

What is CVE-2026-28255?: CVE-2026-28255 is a critical-severity vulnerability in Trane Tracer Concierge, classified under Use of Hard-coded Credentials. CVSS score: 9.8/10. Published 2026-03-12.
How severe is CVE-2026-28255?: Critical severity. CVSS v3 base score is 9.8 out of 10.