What’s Vulnerable › Vulnerabilities

CVE-2021-36200: Metasys ADS/ADX/OAS with MUI

• Severity: medium (CVSS 5.3 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 0.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-07-22 · updated 2026-06-17
• Weakness: CWE-306

Description

Under certain circumstances an unauthenticated user could access the the web API for Metasys ADS/ADX/OAS 10 versions prior to 10.1.6 and 11 versions prior to 11.0.2 and enumerate users.

Affected products

• Johnsoncontrols Metasys Application And Data Server: from 10.0 before 10.1.6; from 11.0 before 11.0.2 — fixed in 10.1.6, 11.0.2
• Johnsoncontrols Metasys Extended Application And Data Server: from 10.0 before 10.1.6; from 11.0 before 11.0.2 — fixed in 10.1.6, 11.0.2
• Johnsoncontrols Metasys Open Application Server: from 10.0 before 10.1.6; from 11.0 before 11.0.2 — fixed in 10.1.6, 11.0.2

How to fix

Upgrade to a fixed version: Johnsoncontrols Metasys Application And Data Server 10.1.6, 11.0.2; Johnsoncontrols Metasys Extended Application And Data Server 10.1.6, 11.0.2; Johnsoncontrols Metasys Open Application Server 10.1.6, 11.0.2. Check the vendor advisory for mitigations.

References

• https://www.cisa.gov/uscert/ics/advisories/icsa-22-202-02
• https://www.johnsoncontrols.com/cyber-solutions/security-advisories
• https://www.cisa.gov/uscert/ics/advisories/icsa-22-202-02
• https://www.johnsoncontrols.com/cyber-solutions/security-advisories

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