Read the docs
TI-2021-09111 Aliases CVE-2021-27663GHSA-7w94-337p-g84p

Improper authorization in Johnson Controls CEM Systems AC2000

Priority MEDIUM 45CWE-285Published · Updated

Key facts

Attack vector
Network
Privileges required
None
User interaction
None
Attack complexity
Low
Impact type
Security bypass
Confidentiality · integrity · availability
High · High · High
Fix status
No fix listed

Attack profile from CVSS 3.1 · NVD. Fix status from CNA. Impact type from CWE-285.

Summary

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.

Why it matters now

EPSS 0.01669 76th percentileScored 2026-11-07
Fix No fix listed No fixed version in the sources yet

SSVC decision points

Not available: CISA has not published SSVC decision points for this record.

Affected products

VendorProductAffected versionsFixed inStatusSource
Johnson ControlsCEM Systems AC200010.1 – 10.5—No fix listedCNA
  • CEM Systems AC2000 VendorJohnson Controls Affected 10.1 – 10.5 Fixed in — No fix listed CNA

CPE configurations NVD · 2

CPEVersionsRoleVendor
cpe:2.3:o:johnsoncontrols:ac2000_firmware:*:*:*:*:*:*:*:*10.1 – 10.5VulnerableJohnson Controls
cpe:2.3:h:johnsoncontrols:ac2000:-:*:*:*:*:*:*:*not specified by NVDRunning onJohnson Controls
  • cpe:2.3:o:johnsoncontrols:ac2000_firmware:*:*:*:*:*:*:*:* Versions 10.1 – 10.5 Vulnerable ·Johnson Controls
  • cpe:2.3:h:johnsoncontrols:ac2000:-:*:*:*:*:*:*:* Versions not specified by NVD Running on ·Johnson Controls

Remediation

No fixed version listed by the sources yet.

Timeline

  1. 2026-10-02 Threatist record created from CVE-2021-27663
  2. 2026-10-03 Alias added: GHSA-7w94-337p-g84p

References

Advisory 2

Sources

This product uses the NVD API but is not endorsed or certified by the NVD. Sources and licences