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Fencer Intel
critical 9.9

CVE-2021-38450 json

Trane Tracer Code Injection

published 5y ago modified 4mo ago also EUVD-2021-24902

cvss
9.9
version 3.1, CNA
cisa kev
Not listed
not in CISA's catalog
epss
1.0%
EPSS 1.0% chance of exploitation in 30 days, percentile 64%
public exploits
0
none known

Summary

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.

Patch / fix

  • Trane Tracer SC 4.4 SP7
  • Trane Tracer SC+ 5.5 SP3
  • Trane Tracer Concierge 5.5 SP3

Is CVE-2021-38450 in your stack? Fencer shows which of your repositories are affected as soon as an advisory lands, and opens the fix as a pull request.

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Vendor advisories

What the vendors themselves say about their products: affected, fixed or not affected, and what to do.

cisa ICSA-21-266-02 updated cvss 9.9

Trane Tracer

  • Trane Tracer Concierge < 5.5 SP3 Trane Tracer SC < 4.4 SP7 Trane Tracer SC+ < 5.5 SP3
    affected: fixed in v5.5, mitigation “Tracer SC: Upgrade to v4.4 SP7 or later”

From CISA ICS and IT advisories (CSAF, https://github.com/cisagov/CSAF), a U.S. Government work; changed: reduced to products, statuses and remediations. CISA notification · csaf

Exploit prediction

1.05% chance of exploitation in the next 30 days, higher than 64% of all scored CVEs (FIRST EPSS, 2026-11-09).

CVSS scores

assigned by version score vector
CNA 3.1 9.9 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:L/I:H/A:H
NVD 3.1 8.8 CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
NVD 2.0 6.5 AV:N/AC:L/Au:S/C:P/I:P/A:P

Affected products

  • Trane Tracer SC
  • Trane Tracer SC+
  • Trane Tracer Concierge

Classification

Weakness
  • CWE-94 Improper Control of Generation of Code

References

Sources

Fencer Intel keeps one entry per vulnerability: the CVE id wins, then GHSA, and records that alias each other are merged, except that two CVEs always keep separate entries. The same data is available as JSON.