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CVE-2026-9509— Uncaught exception vulnerability in Suprema's BioStar

Quick assessment

Affected
Suprema BioStar 2 (server)
Exploitation
No confirmed in-the-wild exploitation; assess based on exposure
Recommended action
Check the vendor advisory and references for a fixed version. If immediate upgrade is impossible, restrict exposure and increase monitoring.

Suprema BioStar是韩国Suprema公司的一个基于 Web 的开放式集成安全平台。为访问控制、考勤管理、访客管理和视频日志维护提供全面的功能。 Suprema BioStar 2 2.9.8版本、2.9.10版本和2.9.11版本存在安全漏洞，该漏洞源于未处理异常，可能导致未经验证的远程攻击者通过发送HTTP POST请求导致拒绝服务。

AI Predicted 7.5 Difficulty: Trivial EPSS 0.35% · P28

Affected Version Matrix 3

VendorProduct Version RangeStatus
Suprema BioStar 2 (server) v2.9.11 affected
v2.9.10 affected
v2.9.8 affected
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I. Basic Information for CVE-2026-9509

Vulnerability Information
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Vulnerability Title
Uncaught exception vulnerability in Suprema's BioStar
Source: CVE Program / CVE List V5
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.
Source: CVE Program / CVE List V5
CVSS Information
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
Source: CVE Program / CVE List V5
Vulnerability Type
未捕获的异常
Source: CVE Program / CVE List V5
Vulnerability Title
Suprema BioStar 安全漏洞
Source: CNNVD (China National Vulnerability Database)
Vulnerability Description
Suprema BioStar是韩国Suprema公司的一个基于 Web 的开放式集成安全平台。为访问控制、考勤管理、访客管理和视频日志维护提供全面的功能。 Suprema BioStar 2 2.9.8版本、2.9.10版本和2.9.11版本存在安全漏洞，该漏洞源于未处理异常，可能导致未经验证的远程攻击者通过发送HTTP POST请求导致拒绝服务。
Source: CNNVD (China National Vulnerability Database)
CVSS Information
N/A
Source: CNNVD (China National Vulnerability Database)
Vulnerability Type
N/A
Source: CNNVD (China National Vulnerability Database)

Affected Products

Vendor Product Affected Versions CPE Subscribe
Suprema BioStar 2 (server) v2.9.11 -

II. Public POCs for CVE-2026-9509

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III. Intelligence Information for CVE-2026-9509

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Vendor Advisories for CVE-2026-9509 (1)

IV. Related Vulnerabilities

Same product: BioStar 2 (server)
Same vendor: Suprema
Same weakness: CWE-248

V. Comments for CVE-2026-9509

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