Vulnerability details
CVE-2026-9509
Suprema BioStar 2
Uncaught exception vulnerability in Suprema's BioStar
CVSS 4.0
8.7High
Official 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.
CVSS scores
| Score | Version | Source | Vector |
|---|---|---|---|
| 8.7High | 4.0 | CVEProject cvelistV5 (CNA) (INCIBE) | 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 |
Affected products
| Vendor | Product | Versions | Source |
|---|---|---|---|
| Suprema | BioStar 2 (server) | v2.9.10 | CVEProject cvelistV5 (CNA) |
| Suprema | BioStar 2 (server) | v2.9.11 | CVEProject cvelistV5 (CNA) |
| Suprema | BioStar 2 (server) | v2.9.8 | CVEProject cvelistV5 (CNA) |
References and advisories
1
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Details
- Published
- 2026-05-29
- Last updated
- 2026-05-29
- State
- Published
- Assigner (CNA)
- INCIBE
Exploit prediction (EPSS)
0.35%
Probability of exploitation in 30 days
28.9%
Percentile (among all CVEs)
SSVC assessment (CISA)
- Automatable
- Yes
- Exploitation
- None
- Technical impact
- Partial
Weaknesses (CWE)
- CWE-248Uncaught exception