Critical severity9.1NVD Advisory· Published Oct 28, 2022· Updated Jun 17, 2026
CVE-2021-38395
CVE-2021-38395
Description
Honeywell Experion PKS C200, C200E, C300, and ACE controllers are vulnerable to improper neutralization of special elements in output, which may allow an attacker to remotely execute arbitrary code and cause a denial-of-service condition.
AI Insight
LLM-synthesized narrative grounded in this CVE's description and references.
Affected products
6- cpe:2.3:o:honeywell:application_control_environment_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:honeywell:c200_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:honeywell:c200e_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:honeywell:c300_firmware:-:*:*:*:*:*:*:*
Patches
Vulnerability mechanics
References
2- www.cisa.gov/uscert/ics/advisories/icsa-21-278-04nvdMitigationThird Party AdvisoryUS Government Resource
- www.honeywellprocess.com/library/support/notifications/Customer/SN2021-02-22-01-Experion-C300-CCL.pdfnvdProduct
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