Vulnerability in Honeywell Application Control Environment
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.
Published · last modified .
CVSS v3 metric
CVSS v3 base score 9.1 (Critical). Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H.
EPSS exploit prediction
EPSS: 0.009 (59.4th percentile), scored .
Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 59th percentile — 59.4% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.
EPSS over last 30 days · oldest: 0.009 · newest: 0.009 · change: 0.000
Affected products
Weakness classification (CWE)
References
- www.cisa.gov/uscert/ics/advisories/icsa-21-278-04 (US Government Resource, Third Party Advisory, Mitigation)
- www.honeywellprocess.com/library/support/notifications/Customer/SN2021-02-22-01… (Product)
Frequently asked questions
- What is CVE-2021-38395?
- CVE-2021-38395 is a critical-severity vulnerability in Honeywell Application Control Environment, classified under Improper Neutralization of Special Elements in Output Used by a Downstream Component (Injection). CVSS score: 9.1/10. Published 2022-10-28.
- How severe is CVE-2021-38395?
- Critical severity. CVSS v3 base score is 9.1 out of 10.