CVE-2021-42534
Trane Building Automation Controllers Cross-site Scripting
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.
Attack profile
How easy it is to exploit
- Attack vector
- Network
- Complexity
- Low
- Privileges needed
- Low
- User interaction
- None
What an attacker can affect
- Confidentiality
- Low
- Integrity
- Low
- Availability
- Low
Exploit likelihood
What each source reports
CVE List Score used
Trane Building Automation Controllers Cross-site Scripting
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.
- Record
CVE-2021-42534- CVSS 3.1
- 6.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L - Weakness
- CWE-79
- Updated
- 2026-11-02
EUVDEUVD-2021-29503
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.
- Record
EUVD-2021-29503- CVSS 3.1
- 6.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L - Updated
- 2026-11-03
GitHub AdvisoriesGHSA-mx7v-jfp8-4wr2 No score
The affected product’s web application does not properly neutralize the input during webpage...
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.
- Record
GHSA-mx7v-jfp8-4wr2- Weakness
- CWE-79
- Updated
- 2026-11-02
NVD
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.
- Record
CVE-2021-42534- CVSS 3.1
- 6.3 Medium
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:L/I:L/A:L - CVSS 3.1
- 6.1 Medium
CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:L/I:L/A:N - CVSS 2.0
- 4.3 Medium
AV:N/AC:M/Au:N/C:N/I:P/A:N - Weakness
- CWE-79
- Updated
- 2026-11-02
Affected products
History
| Recorded | Changed | Sources |
|---|---|---|
| aliases, published | EUVD | |
| first indexed | CVE List, GitHub Advisories, NVD |
Dates are when Every CVE recorded each change. Upstream dates may differ.
In short
CVE-2021-42534 is a medium vulnerability (CVSS 6.3) in Trane Tracer Sc, published October 22, 2021. No source lists public exploit code. EPSS puts the chance of exploitation in the next 30 days at 0.61%, the 49th percentile. No source names a fixed version.