Uncaught exception vulnerability in Suprema’s BioStar_CVE-2026-9509

8.7 / 10

HIGH

CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:N/VI:N/VA:H/SC:N/SI:N/SA:N

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.

Basic Information

ID CVE-2026-9509

Source INCIBE

Published May 29, 2026 at 12:11

Modified May 29, 2026 at 13:33

Affected Product

Vendor Suprema

Product BioStar 2 (server)

Version v2.9.11

Affected Versions Suprema BioStar 2 (server) v2.9.11
Suprema BioStar 2 (server) v2.9.10
Suprema BioStar 2 (server) v2.9.8

CWE Classification

CWE-248

References

www.incibe.es /en/incibe-cert/notices/aviso/multiple-vulnerabilities-supremas-biostar

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    "published": "2026-05-29T12:11:07.142Z",
    "modified": "2026-05-29T13:33:02.406Z",
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