CVE-2021-27663
CEM Systems AC2000
CRITICAL
9.8
CVSS Score
Published: August 30, 2021 at 04:37 PM UTC
Updated: June 17, 2026 at 03:45 AM UTC
2 products affected across 1 vendorAC2000 FirmwareCEM Systems AC2000
Using CEM Systems AC2000 by Johnson Controls?
Get instant alerts when new vulnerabilities affect CEM Systems AC2000 - before attackers find them.
Real-time alertsTrack your software stackFree plan available
Severity
CRITICAL9.8
Exploit prediction
EPSS 2%
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
Our own answer: ranges merged, affected separated from platform-only, with confidence and review flags.
10.1 ≤ v ≤ 10.510.1
Remediation
No guide yetNo remediation guidance has been written for this CVE yet. What the record does show:
Patch and advisory references
References (2)
Third Party Advisoryx_refsource_CERTUS Government Resource
Source: [email protected]
https://us-cert.gov/ics/advisories/ICSA-21-238-01x_refsource_CONFIRMVendor Advisory
Source: [email protected]
https://www.johnsoncontrols.com/cyber-solutions/security-advisoriesCVSS
- Attack Vector
- NETWORK
- Complexity
- LOW
- Privileges
- NONE
- User Interaction
- NONE
- Scope
- UNCHANGED
- Confidentiality
- HIGH
- Integrity
- HIGH
- Availability
- HIGH
Vector?
Quick Info
StatusMODIFIED
CWE
CWE-285NVD-CWE-Other
Get alerted
Stop reading CVE feeds looking for your own stack
Track the products you run and VulnTracker tells you when a new CVE affects them — with what is known about fixing it, and nothing about the rest.
Free plan, no card