Vulnerability · CVE-2026-28253
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 den…
Published Mar 12, 2026 · catalog updated Jun 17, 2026 · tracer sc firmware
Last checked Nov 1, 2026. A connected source was read within the last 7 days.
Check if you run it
No confirmed exploitation is on record for CVE-2026-28253. EPSS is 0.32%. Act only if a listed version of tracer sc firmware is installed.
Gaps on this record
- No vendor fix or required action is stored. Compare the linked advisory before you change production.
Same product and reporting
- CVE-2026-28255 · High
- CVE-2026-28254 · Medium
- CVE-2026-28252 · Critical
- Severity
- High8.7
- Known exploitation
- Not in CISA/VulnCheck KEV
- EPSS
- 0.32%
- Remediation
- Advisory link
- Affected products
- cpe trane/tracer concierge · cpe trane/tracer sc firmware · cpe trane/tracer sc+ firmware
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
Are you affected?
Enter the version you run. The result uses only the ranges stored on this record.
The check returns affected, not affected, or incomplete. It does not guess a version that is missing from the record.
- cpe trane/tracer conciergeversion unspecified
- cpe trane/tracer sc firmware4.4
- cpe trane/tracer sc+ firmwareversion unspecified
How to fix CVE-2026-28253
No stored fix
No vendor fix text is stored. Use the linked advisory before you change production.
Version check
Seen in 4.4
Advisory
Open the cve_org record and follow its fix.
Official advisories
What to do
Three questions, each answered from this record only. Confirm the vendor advisory before you patch.
Should you patch?
No confirmed exploitation is on record for CVE-2026-28253. EPSS is 0.32%. Act only if a listed version of tracer sc firmware is installed.
Which versions are affected?
Compare what you have installed with trane/tracer sc firmware 4.4. Compare the installed version with the linked vendor advisory before you change production.
What should an analyst verify?
CWE-789. EPSS 0.32%. There is no CISA KEV listing. No Exploit-DB or Metasploit reference is linked. Use the source links for the original advisory.
Code
The project this record applies to. Exploit listings stay in References.
No public source repository is identified for this product.
Timeline
Detection, updates, and resolution for this record.
Mar 12, 2026 · NIST NVD
Detected
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
Jun 17, 2026 · NIST NVD
Updated
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
Sources
- CVE.orgVulnerability recordCVE-2026-28253
Official CVE identifier
cve.org - FIRST EPSSExploitation probabilityCVE-2026-28253
30-day exploitation probability 0.32%
first.org - NIST NVDVulnerability recordCVE-2026-28253
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
nvd.nist.gov
References
Freshness
Last verified in this catalog Nov 1, 2026. Significant claims (KEV, EPSS, CVSS, affected ranges) come from the source rows above — open the original publisher for the authoritative advisory.
- FIRST EPSSNov 1, 2026
- CVE.orgOct 16, 2026
- NIST NVDOct 15, 2026