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CVE-2026-9508— Incorrect Permission Assignment for Critical Resource 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 2.9.3版本至2.9.11版本存在安全漏洞，该漏洞源于关键资源权限设置不当，可能导致攻击者直接下载备份文件，导致敏感信息泄露。

AI Predicted 9.1 Difficulty: Trivial EPSS 0.34% · P27

Possible ATT&CK Techniques 1 AI

T1530 · Data from Cloud Storage

Affected Version Matrix 2

VendorProduct Version RangeStatus
Suprema BioStar 2 (server) v2.9.3≤ v2.9.11 affected
v2.9.12 unaffected
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I. Basic Information for CVE-2026-9508

Vulnerability Information
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Vulnerability Title
Incorrect Permission Assignment for Critical Resource vulnerability in Suprema's BioStar
Source: CVE Program / CVE List V5
Vulnerability Description
Incorrect permission settings on a critical resource in Suprema BioStar 2 (versions 2.9.3 through 2.9.11) that allow backup files to be publicly exposed when the administrator configures their path within the NGINX webroot. This vulnerability allows an attacker with network access to directly download backup ZIP files via ‘http(s)://[server]/download/…’ without requiring authentication. This exposes highly sensitive information that can lead to server impersonation, unauthorized access to databases, and lateral movement.
Source: CVE Program / CVE List V5
CVSS Information
CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:L/SC:H/SI:H/SA:L
Source: CVE Program / CVE List V5
Vulnerability Type
关键资源的不正确权限授予
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 2.9.3版本至2.9.11版本存在安全漏洞，该漏洞源于关键资源权限设置不当，可能导致攻击者直接下载备份文件，导致敏感信息泄露。
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) v2.9.3 ~ v2.9.11 -

II. Public POCs for CVE-2026-9508

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III. Intelligence Information for CVE-2026-9508

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Vendor Advisories for CVE-2026-9508 (1)

IV. Related Vulnerabilities

Same product: BioStar 2 (server)
Same vendor: Suprema
Same weakness: CWE-732

V. Comments for CVE-2026-9508

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