CVE-2026-28256 is a critical Use of Hard-coded, Security-relevant Constants vulnerability affecting Trane Tracer SC, Tracer SC+, and Tracer Concierge products. This flaw could allow an unauthenticated attacker to remotely disclose sensitive information and achieve full account takeover. Rated 9.8 CRITICAL, it can be exploited over the network with low attack complexity and requires no privileges or user interaction, leading to high impact on confidentiality, integrity, and availability. Currently, there is no evidence of active exploitation, nor are public exploit modules available in Metasploit, Nuclei, or ExploitDB, and it is not listed in CISA's KEV catalog. Community discussion and media coverage remain minimal.
| Vendor | Product | Version(s) | CPE |
|---|---|---|---|
< 6.3.2310CPE matchmatch criteria | cpe:2.3:o:trane:tracer_sc\+_firmware:*:*:*:*:*:*:*:* | ||
<= 4.4CPE matchmatch criteria | cpe:2.3:o:trane:tracer_sc_firmware:*:*:*:*:*:*:*:* | ||
4.4CPE matchmatch criteria | cpe:2.3:o:trane:tracer_sc_firmware:4.4:service_pack1:*:*:*:*:*:* | ||
4.4CPE matchmatch criteria | cpe:2.3:o:trane:tracer_sc_firmware:4.4:service_pack2:*:*:*:*:*:* | ||
4.4CPE matchmatch criteria | cpe:2.3:o:trane:tracer_sc_firmware:4.4:service_pack3:*:*:*:*:*:* |
CVSS version used by this source: 4.0
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:X/V:X/RE:X/U:X
The average CVE in this peer group has 0.0 Twitter, 0.1 Reddit, 0.3 Bluesky, 0.3 Mastodon, and 2.4 GitHub mentions.
The average CVE in this peer group has 0.3 InfoSec Media, 0.0 Vendor Blog, and 0.0 Security Researcher mentions.
Remediation records are not available for this CVE.