istar security

About this tag
The istar security tag on WindowsForum.com covers discussions about Johnson Controls iSTAR door controller systems, focusing on a TLS certificate expiration flaw that can disrupt host communication and impact access-control availability. Topics include mitigation steps like certificate replacement, migration to TLS 1.3, and hardware upgrades for legacy panels, as advised by the vendor and CISA. The content is relevant for IT and security professionals managing physical access control infrastructure.

  1. iSTAR TLS Certificate Expiry: Quick Mitigations and TLS 1.3 Migration

    Johnson Controls has warned that a certificate-handling flaw in several iSTAR door‑controller families can leave panels unable to restore host communication after the default TLS certificate expires — a failure that impacts availability rather than enabling obvious data theft, but which...
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    • cisa cybersecurity istar security tls certificates
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    • Forum: Security Alerts