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TI-2021-18820 Aliases CVE-2021-42534GHSA-mx7v-jfp8-4wr2

Trane Building Automation Controllers Cross-site Scripting

Priority LOW 29CWE-79Published · Updated

Key facts

Attack vector
Network
Privileges required
Low
User interaction
None
Attack complexity
Low
Impact type
Cross-site scripting
Confidentiality · integrity · availability
Low · Low · Low
Fix status
No fix listed

Attack profile from CVSS 3.1 · CNA. Fix status from CNA. Impact type from CWE-79.

Summary

The affected product’s web application does not properly neutralize the input during webpage generation, which could allow an attacker to inject code in the input forms.

Why it matters now

EPSS 0.00607 49th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
TraneTracer SCAll – 3.8—No fix listedCNA
  • Tracer SC VendorTrane Affected All – 3.8 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:trane:tracer_sc_firmware:*:*:*:*:*:*:*:*up to 3.8VulnerableTrane
cpe:2.3:h:trane:tracer_sc:-:*:*:*:*:*:*:*not specified by NVDRunning onTrane
  • cpe:2.3:o:trane:tracer_sc_firmware:*:*:*:*:*:*:*:* Versions up to 3.8 Vulnerable ·Trane
  • cpe:2.3:h:trane:tracer_sc:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Trane

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-42534
  2. 2026-10-03 Alias added: GHSA-mx7v-jfp8-4wr2

References

Advisory 1

  • TI-2021-16050 Trane Tracer Code Injection CVSS 3.1CRITICAL 9.9
  • TI-2026-22569 Memory Allocation with Excessive Size Value vulnerability in Trane Tracer SC, Tracer SC+, and Tracer Concierge CVSS 4.0HIGH 8.7
  • TI-2026-22568 Use of a Broken or Risky Cryptographic Algorithm vulnerability in Trane Tracer SC, Tracer SC+, and Tracer Concierge CVSS 4.0CRITICAL 9.2
  • TI-2026-22571 Use of Hard-coded Credentials vulnerability in Trane Tracer SC, Tracer SC+, and Tracer Concierge CVSS 4.0HIGH 8.2
  • TI-2026-22570 Missing Authorization vulnerability in Trane Tracer SC, Tracer SC+, and Tracer Concierge CVSS 4.0MEDIUM 6.9
  • TI-2026-22572 Use of Hard-coded Credentials vulnerability in Trane Tracer SC, Tracer SC+, and Tracer Concierge CVSS 4.0MEDIUM 6.9

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences