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CVE-2026-28253

Memory Allocation with Excessive Size Value vulnerability in Trane Tracer SC, Tracer SC+, and Tracer Concierge

HIGH
7.5
CVSS Score
Published: March 12, 2026 at 05:27 PM UTC
Updated: June 17, 2026 at 10:28 AM UTC
3 products affected across 1 vendorTracer Sc+ FirmwareTracer ConciergeTracer SC

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Severity
HIGH7.5
Exploit prediction
EPSS 0.3%
SSVC
No known exploit

Description

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

Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.

Tracer Concierge· Trane
95%
v < 6.3.2310v < v6.3.2310
Affected range stops below v6.3.2310, so it looks safe — our inference, not a vendor statement
Tracer Sc+ Firmware· Trane
95%
v ≤ 4.4v < 6.3.23104.4 service_pack14.4 service_pack24.4 service_pack34.4 service_pack44.4 service_pack54.4 service_pack6
trane-tracer-sc (same device)
Tracer SC· Trane
60%
v < v4.4 SP7v < v6.3.2310
Affected range stops below v4.4 SP7, so it looks safe — our inference, not a vendor statement
Affected range stops below v6.3.2310, so it looks safe — our inference, not a vendor statement

Remediation

No guide yet

No remediation guidance has been written for this CVE yet, and no fixed version or vendor advisory is recorded against it.

References (1)

US Government ResourceThird Party Advisory
Source: cverecord
https://www.cisa.gov/news-events/ics-advisories/icsa-26-071-01

SSVC — Action Prioritization

SSVCNo known exploitAutomatablePartial impact

SSVC signals action urgency (what to patch first), separate from CVSS which measures severity.

CVSS

7.5HIGH[email protected]
Attack Vector
NETWORK
Complexity
LOW
Privileges
NONE
User Interaction
NONE
Scope
UNCHANGED
Confidentiality
NONE
Integrity
NONE
Availability
HIGH
Vector?

Quick Info

StatusANALYZED
CWE
CWE-789

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