Vulnerability Description
An unhandled exception in Suprema BioStar 2 (Server), versions 2.9.8, 2.9.10, and 2.9.11, that allows an unauthenticated remote attacker to cause a denial of service (DoS) by sending HTTP POST requests to the ‘/api/migration’ endpoint. This request triggers a failure that halts critical processes, leaving the system offline until the services or server are manually restarted. As a result, access control readers cease to function, and potential failures may occur in third-party integrations. Since the exploit requires no privileges or user interaction and is trivial to automate, the impact on availability is high, and the effect extends to interconnected systems.
Related Weaknesses (CWE)
References
FAQ
What is CVE-2026-9509?
CVE-2026-9509 is a documented vulnerability. An unhandled exception in Suprema BioStar 2 (Server), versions 2.9.8, 2.9.10, and 2.9.11, that allows an unauthenticated remote attacker to cause a denial of service (DoS) by sending HTTP POST request...
How severe is CVE-2026-9509?
CVSS scoring is not yet available for CVE-2026-9509. Check NVD for updates.
Is there a patch for CVE-2026-9509?
Check the references section above for vendor advisories and patch information. Review vendor security bulletins for remediation guidance.