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ICS: Johnson Controls CEM Systems AC2000

Severity

High

Analysis Summary

CVE-2021-3156 

The affected product has an off-by-one error vulnerability, which may allow an attacker to achieve “super user” access on the operating system.

Impact

  • Unauthorized Access

Affected Vendors

  • Johnson Controls

Affected Products

  • CEM Systems AC2000: All versions prior to Version 10.6

Remediation

Refer to CISA Advisory for the patch, upgrade, or suggested workaround information.

https://us-cert.cisa.gov/ics/advisories/icsa-21-334-04