Quick answers
- Is CVE-2026-9509 exploited in the wild?
- No. Junglewise Threat Intelligence has no report of CVE-2026-9509 being exploited in the wild.
- How severe is CVE-2026-9509?
- Informational severity, with a CVSS score of 8.7, published 29 May 2026.
- Which products and versions are affected?
- Suprema BioStar 2 2.9.8, 2.9.10, 2.9.11.
- Is there a fix for CVE-2026-9509?
- A patch was published on 2026-05-29. Junglewise finds every place you run it, drafts the upgrade and applies it once you approve.
- How is CVE-2026-9509 attacked?
- It is attacked over the network, in a network appliance.
- Am I affected by CVE-2026-9509?
- Check whether you run Suprema BioStar 2 at an affected version. Junglewise does that check for you around the clock: connect your code, cloud and domains, and it matches new vulnerabilities like this one against what you actually run and tells you when one reaches you.
Technical details
The vulnerability is classified as an Uncaught Exception (CWE-248) within the '/api/migration' endpoint of the Suprema BioStar 2 Server. An unauthenticated remote attacker can trigger this exception by sending a specially crafted HTTP POST request. Because the application fails to handle the resulting error, critical server processes halt, leading to a complete Denial of Service (DoS). Exploitation requires no user interaction or privileges and results in the failure of access control readers and third-party integrations until a manual service restart is performed. The vendor has released patches to address this issue.
Affected products
- Suprema BioStar 2 (Server) 2.9.8, 2.9.10, 2.9.11
Timeline
- 2026-05-29: disclosed
- 2026-05-29: advisory
- 2026-05-29: patched