CVE Tools
Sign in

CVE-2021-38399

Honeywell Experion PKS and ACE Controllers Relative Path Traversal

Published: Oct 28, 2022Updated: Nov 21, 2024 Sources: CVE List NVD BDU csafCWE-23
NVD MITRE
7.5CVSSHIGH
EPSS Score
0.7%
Top 50.4%
CISA KEV
Not in KEV
Exploits
No Known Exploits
Remediation
Patch Available

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.

CVSS Vector Breakdown

AV:NAC:LPR:NUI:NS:UC:HI:NA:N
Exploitability
AV:NAttack Vector
Network
AC:LAttack Complexity
Low
PR:NPrivileges Required
None
UI:NUser Interaction
None
Scope
S:UScope
Unchanged
Impact
C:HConfidentiality
High
I:NIntegrity
None
A:NAvailability
None
Open in CVSS calculator →

Weaknesses

CWE-23CWE-22

Affected Products

Experion PKSHoneywellICS / OT / IoT
Experion Process Knowledge System C200Honeywell Internatioinal Inc.
On-prem
ICS / OT / IoT / plc-scada-hmi
Experion Process Knowledge System C200EHoneywell Internatioinal Inc.
On-prem
ICS / OT / IoT / plc-scada-hmi
Experion Process Knowledge System C300 and ACEHoneywell Internatioinal Inc.
On-prem
ICS / OT / IoT / plc-scada-hmi
c200 firmwarehoneywellICS / OT / IoT
honeywellcommercialUSICS / OT / IoTaka experion server, saia pg5 controls suite, experion pks
honeywell internatioinal inc.commercialUSICS / OT / IoTaka honeywell international, experion pks, experion lx, experion plantcruise
and 3 more affected products View all →

Attack Graph

Products CVE Techniques Tactics

Click technique nodes to view MITRE ATT&CK details. Scroll to zoom, drag to pan.

Exploitability

Official Patch Available
Workaround Available

MITRE ATT&CK

2 techniques
Collection
Discovery
View detailed technique mapping

References

https://www.cisa.gov/uscert/ics/advisories/icsa-21-278-04
cisa.gov
https://www.honeywellprocess.com/library/support/notifications/Customer/SN2021-02-22-01-Experion-C300-CCL.pdf
honeywellprocess.com
https://ics-cert.us-cert.gov/advisories/icsa-21-278-04
ics-cert.us-cert.gov
and 14 more references View all →

Timeline

Published
Oct 28, 2022
Last Updated
Nov 21, 2024

Unlock Complete Vulnerability Intelligence

Get the full picture for CVE-2021-38399 and every CVE in our database. Create a free account — no credit card required.

Create Free Account
Plain-language analysis
Impact assessment and exploitation scenario in plain English
Attack graph visualization
Interactive attack path and kill chain mapping
Exploit details & PoC links
ExploitDB, Metasploit, GitHub PoCs with direct links
Nuclei scanner templates
Ready-to-use vulnerability scanner templates
Full remediation guide
Patch instructions, workarounds, and compliance impact
Interactive AI chat
Ask questions about this vulnerability in natural language
Related vulnerabilities
Semantically similar CVEs and attack patterns
REST API & MCP access
Integrate vulnerability data into your workflows