What’s Vulnerable › Vulnerabilities

CVE-2021-36205: Metasys session token

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.0% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2022-04-15 · updated 2026-06-17
• Weakness: CWE-459

Description

Under certain circumstances the session token is not cleared on logout.

Affected products

• Johnsoncontrols Metasys Application And Data Server: from 10.0 before 10.1.5; from 11.0 before 11.0.2 — fixed in 10.1.5, 11.0.2
• Johnsoncontrols Metasys Extended Application And Data Server: from 10.0 before 10.1.5; from 11.0 before 11.0.2 — fixed in 10.1.5, 11.0.2
• Johnsoncontrols Metasys Open Application Server: from 10.0 before 10.1.5; from 11.0 before 11.0.2 — fixed in 10.1.5, 11.0.2

How to fix

Upgrade to a fixed version: Johnsoncontrols Metasys Application And Data Server 10.1.5, 11.0.2; Johnsoncontrols Metasys Extended Application And Data Server 10.1.5, 11.0.2; Johnsoncontrols Metasys Open Application Server 10.1.5, 11.0.2. Check the vendor advisory for mitigations.

References

• https://www.cisa.gov/uscert/ics/advisories/icsa-22-104-02
• https://www.johnsoncontrols.com/cyber-solutions/security-advisories
• https://www.cisa.gov/uscert/ics/advisories/icsa-22-104-02
• https://www.johnsoncontrols.com/cyber-solutions/security-advisories

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