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Status published
High
CVE-2021-38399
Honeywell Experion PKS and ACE Controllers Relative Path Traversal
Vulnerability Description
Honeywell Experion PKS C200, C200E, C300, and ACE controllers are vulnerable to relative path traversal, which may allow an attacker access to unauthorized files and directories.
Impact Analysis
Refer to official advisory for detailed impact metrics.
Remediation
Ensure systems are updated to the latest vendor-supplied patch levels.
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Credits & Attribution
The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:
- Rei Henigman and Nadav Erez of Claroty reported these vulnerabilities to CISA.
References
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Affected Vendor
Honeywell
View all reports →Affected Software
Experion PKS
Vulnerable Versions:
C200, C200E, C300, ACE controllers
Timeline
Official Publish:
October 28th, 2022
Last Modified:
April 16th, 2025
Added to House:
July 21st, 2026
CVSS Vectors
V3:
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N