CVE-2026-28256: Trane Tracer Concierge

Critical severity, CVSS 9.8. EPSS: 0.5% chance of exploitation in the next 30 days.

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 Concierge: before 6.3.2310 (fixed in 6.3.2310)
• Trane Tracer Sc+ Firmware: before 6.3.2310 (fixed in 6.3.2310)
• Trane Tracer Sc Firmware: up to and including 4.4; version 4.4 only

Published 2026-03-12. Last modified 2026-06-17.