CVE-2021-38450

mediumpriority · track · 35EPSS 0.010 · 64 %ileEUUS
grimoire priorityP3 · Track
Exploitable?
—
no known exploitation
Likely / severe?
1.05% (64th) EPSS
CVSS 6.5 · medium
Is it mine?
15 products
Check your exposure
Who says so?
4 sources
cnnvd · enisa_euvd · cisa_csaf_ot · nvd

EPSS · scored 2026-10-27

The affected controllers do not properly sanitize the input containing code syntax. As a result, an attacker could craft code to alter the intended controller flow of the software.

01

remediations

Vendor fix, mitigation, or workaround guidance, as published by each source.

A vendor fix is available.

  • FixedTracer Conciergecisa_csaf_ot

    Tracer SC is no longer actively developed, tested, or sold. Tracer SC will be considered end-of-life on December 31, 2022. Trane recommends identifying a migration plan for replacing the Tracer SC controller with the next-generation Tracer SC+ controller. Tracer SC+ can function as a drop-in replacement for Tracer SC, providing significant updates to security capabilities.

  • FixedTracer SCcisa_csaf_ot

    Tracer SC is no longer actively developed, tested, or sold. Tracer SC will be considered end-of-life on December 31, 2022. Trane recommends identifying a migration plan for replacing the Tracer SC controller with the next-generation Tracer SC+ controller. Tracer SC+ can function as a drop-in replacement for Tracer SC, providing significant updates to security capabilities.

  • FixedTracer SC+cisa_csaf_ot

    Tracer SC is no longer actively developed, tested, or sold. Tracer SC will be considered end-of-life on December 31, 2022. Trane recommends identifying a migration plan for replacing the Tracer SC controller with the next-generation Tracer SC+ controller. Tracer SC+ can function as a drop-in replacement for Tracer SC, providing significant updates to security capabilities.

  • MitigationTracer Conciergecisa_csaf_ot

    Ensure user credentials are not shared and follow best practices for appropriate complexity (e.g., strong passwords).

  • MitigationTracer SCcisa_csaf_ot

    Ensure user credentials are not shared and follow best practices for appropriate complexity (e.g., strong passwords).

  • MitigationTracer SC+cisa_csaf_ot

    Ensure user credentials are not shared and follow best practices for appropriate complexity (e.g., strong passwords).

02

cvss

Technical severity, 0–10. One row per scoring source.

9.9
010

base score 0–10 · higher = more severe · hover a vector to decode⚠ sources disagree · medium–critical · 6.5–9.9

v2.06.5mediumAV:N/AC:L/Au:S/C:P/I:P/A:Pprimary · NVD / NIST USexploitability 8 · impact 6.4
v3.18.8highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:Hprimary · NVD / NIST USexploitability 2.8 · impact 5.9
v3.09.9criticalCVSS:3.0/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:Hsecondary · CISA US
v3.19.9criticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:Hsecondary · ENISA EU
v3.19.9criticalCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:Hsecondary · ics-cert@hq.dhs.gov USexploitability 3.1 · impact 6
v3.18.1highCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:Usecondary · CVSS-BT (t0sche)
03

weaknesses

The CWE weakness classes this flaw belongs to.

CWE-94USCWE-94US
04

affected products (15)

Products and version ranges known to be affected.

05

advisories (1)

Vendor and ecosystem advisories describing this.

  • ICSA-21-266-02Trane Tracer2021-09-23icsa · cisa_csaf_otUS

    Successful exploitation of this vulnerability could allow an authenticated user to execute arbitrary code on the controller.

06

also known as (3)

Other names and identifiers for this entity.

07

sources

Which sources assert this record, and when.

cnnvdenisa_euvdcisa_csaf_otnvdNVDCVE.orgMITRE
published 2021-10-27modified 2026-06-17
08

references (6)

External citations — patches, advisories, analysis.

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