Johnson Controls · Metasys · CVE-2019-7593
**Name of the Vulnerable Software and Affected Versions**
Metasys versions prior to 9.0
**Description**
The issue is related to the reuse of a cryptographic pair in encryption, which may allow a remote attacker to impact the confidentiality and integrity of protected information. The Metasys system uses a shared RSA key pair for certain encryption operations involving the Site Management Portal.
**Recommendations**
For versions prior to 9.0, update to version 9.0 or later to resolve the issue. As a temporary workaround, consider restricting access to the Site Management Portal to minimize the risk of exploitation.