Vulnerability identifier: #VU56123

Vulnerability risk: High

CVSSv3.1: 7.1 [CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:L/A:N/E:U/RL:O/RC:C]

CVE-ID: CVE-2021-27663

CWE-ID: CWE-285

Exploitation vector: Network

Exploit availability: No

Vulnerable software:
CEM Systems AC2000
Server applications / Other server solutions

Vendor: Johnson Controls

Description

The vulnerability allows a remote attacker to bypass authorization checks.

The vulnerability exists due to the application does not perform an adequate authorization check for functionality that requires a provable user identity. A remote attacker can bypass authorization checks on the target system. 

Mitigation
Install updates from vendor's website.

Vulnerable software versions

CEM Systems AC2000: 10.1 - 10.5

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External links
http://ics-cert.us-cert.gov/advisories/icsa-21-238-01

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Q & A

Can this vulnerability be exploited remotely?

Yes. This vulnerability can be exploited by a remote non-authenticated attacker via the Internet.

Is there known malware, which exploits this vulnerability?

No. We are not aware of malware exploiting this vulnerability.