What is CVE-2021-36201?

CVE-2021-36201 is a medium-severity vulnerability in Johnson Controls C•cure 9000, classified under Observable Response Discrepancy. CVSS score: 4.3/10. Published 2022-10-11.

How severe is CVE-2021-36201?

Medium severity. CVSS v3 base score is 4.3 out of 10.

Vulnerability in Johnson Controls C•cure 9000

CVE-2021-36201

Under certain circumstances a CCURE Portal user could enumerate user accounts in CCURE 9000 version 2.90 and prior versions.

Published 2022-10-11 · last modified 2026-06-17.

CVSS v3 metric

CVSS v3 base score 4.3 (Medium). Vector: CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N.

EPSS exploit prediction

EPSS: 0.006 (45.0th percentile), scored 2026-09-29.

Very low probability of exploitation in the next 30 days; routine patching cadence is appropriate. 45th percentile — 45.0% of CVEs in the catalogue have a lower EPSS than this one. How to read EPSS.

EPSS over last 30 days · oldest: 0.005 · newest: 0.006 · change: +0.000

Affected products

Johnson Controls C•cure 9000 — versions 2.90 and ealier
Johnsoncontrols C-Cure 9000
Johnsoncontrols C-Cure 9000 Firmware

Weakness classification (CWE)

References

www.johnsoncontrols.com/cyber-solutions/security-advisories (Vendor Advisory)
www.cisa.gov/uscert/ics/advisories/icsa-22-284-03 (US Government Resource, Third Party Advisory, third-party-advisory)

Frequently asked questions

What is CVE-2021-36201?: CVE-2021-36201 is a medium-severity vulnerability in Johnson Controls C•cure 9000, classified under Observable Response Discrepancy. CVSS score: 4.3/10. Published 2022-10-11.
How severe is CVE-2021-36201?: Medium severity. CVSS v3 base score is 4.3 out of 10.