Johnson Controls C-CURE 9000 — kwetsbaarheid CVE-2026-21653

Victor SSRF vulnerability in Johnson Controls CCure 9000 and victor application server allows Server Side Request Forgery. This issue affects CCure 9000 and victor application server: from 2.9 through 3.0.

CVSS:3.1/AV:A/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:H

Johnson Controls recommends the following defensive measures to help reduce the risk of exploitation. Johnson Controls recommends following both steps in the mitigation guidance. However, until an upgrade is completed, the defensive measures outlined will reduce the attack surface: Firewall / access control lists - Implement strict firewall rules to block all unnecessary inbound connections to port 8999 from untrusted network segments. Intrusion detection / prevention - Deploy IDS/IPS signatures tuned to detect known .NET deserialization exploit payloads (e.g., ysoserial.net patterns) targeting port 8999. Application whitelisting - Enforce application whitelisting on application server hosts to prevent unauthorized executables from being launched by the server process. Least privilege - Ensure the application server process runs with the minimum privileges necessary, reducing the impact of successful exploitation. Monitor and audit - Enable detailed logging on application server hosts and monitor for anomalous process creation by SoftwareHouse.CrossFire.Server.exe. Disable unnecessary services - If the ClientConnectionManager_NF.SynchronousServerNotification callback interface is not required, disable or restrict it to reduce attack surface.