Vulnerability Details : CVE-2021-38395
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.
Vulnerability category: Execute codeDenial of service
Products affected by CVE-2021-38395
- cpe:2.3:o:honeywell:c200_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:honeywell:c200e_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:honeywell:c300_firmware:-:*:*:*:*:*:*:*
- cpe:2.3:o:honeywell:application_control_environment_firmware:-:*:*:*:*:*:*:*
Exploit prediction scoring system (EPSS) score for CVE-2021-38395
0.13%
Probability of exploitation activity in the next 30 days
EPSS Score History
~ 29 %
Percentile, the proportion of vulnerabilities that are scored at or less
CVSS scores for CVE-2021-38395
| Base Score | Base Severity | CVSS Vector | Exploitability Score | Impact Score | Score Source | First Seen |
|---|---|---|---|---|---|---|
|
9.1
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H |
3.9
|
5.2
|
ICS-CERT | |
|
9.8
|
CRITICAL | CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H |
3.9
|
5.9
|
NIST |
CWE ids for CVE-2021-38395
-
The product constructs all or part of a command, data structure, or record using externally-influenced input from an upstream component, but it does not neutralize or incorrectly neutralizes special elements that could modify how it is parsed or interpreted when it is sent to a downstream component.Assigned by:
- ics-cert@hq.dhs.gov (Secondary)
- nvd@nist.gov (Primary)
References for CVE-2021-38395
-
https://www.cisa.gov/uscert/ics/advisories/icsa-21-278-04
Honeywell Experion PKS and ACE Controllers | CISAMitigation;Third Party Advisory;US Government Resource
-
https://www.honeywellprocess.com/library/support/notifications/Customer/SN2021-02-22-01-Experion-C300-CCL.pdf
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