CVE-2021-38399

Honeywell Experion PKS and ACE Controllers Relative Path Traversal

State: Published
Severity: 7.5 High
Published: Oct 28, 2022
Updated: Apr 16, 2025
Reserved: Aug 10, 2021

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.

Scores

CVSS	Score	Vector	Source
3.1	7.5 High	CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:N	icscert

Weaknesses

CWE-23 Relative Path Traversal

Affected Products

Product	Versions
Experion PKSHoneywell	C200Affected C200EAffected C300Affected ACE controllersAffected

References

https://www.cisa.gov/uscert/ics/advisories/icsa-21-278-04
https://www.honeywellprocess.com/library/support/notifications/Customer/SN2021-02-22-01-Experion-C300-CCL.pdf

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