What’s Vulnerable › Vulnerabilities

CVE-2021-27663: CEM Systems AC2000

• Severity: critical (CVSS 9.8 v3.1)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 1.7% probability of exploitation in the next 30 days
• Public exploit or detection template: none known
• Published: 2021-08-30 · updated 2026-06-17
• Weakness: CWE-285

Description

A vulnerability in versions 10.1 through 10.5 of Johnson Controls CEM Systems AC2000 allows a remote attacker to access to the system without adequate authorization. This issue affects: Johnson Controls CEM Systems AC2000 10.1; 10.2; 10.3; 10.4; 10.5.

Affected products

• Johnson Controls CEM Systems AC2000: from 10.1 through 10.5

References

• https://us-cert.gov/ics/advisories/ICSA-21-238-01
• https://www.johnsoncontrols.com/cyber-solutions/security-advisories
• https://us-cert.gov/ics/advisories/ICSA-21-238-01
• https://www.johnsoncontrols.com/cyber-solutions/security-advisories

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