Incorrect Permission Assignment for Critical Resource vulnerability in Suprema's BioStar
Key facts
- Attack vector
- Network
- Privileges required
- None
- User interaction
- None
- Attack complexity
- Low
- Attack requirements
- None
- Impact type
- —
- Confidentiality · integrity · availability
- High · High · Low
- Fix status
- Fixed
Attack profile from CVSS 4.0 · CNA. Fix status from CNA.
Summary
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.
Why it matters now
SSVC decision points
CISA ADP · SSVC 2.0.3
- Exploitation
- None
- Automatable
- Yes
- Technical impact
- Total
The decision (Track, Attend, Act) also depends on your mission and well-being impact; see CISA's SSVC guide.
Affected products
Remediation
- Fix · CNA BioStar 2 (server) (Suprema) Fixed in v2.9.12
Timeline
- 2026-10-02 Threatist record created from CVE-2026-9508
- 2026-10-03 Alias added: GHSA-3fmq-xr93-jqc5
References
More Suprema vulnerabilities
- TI-2025-27503 Suprema BioStar 2 Insecure Password Change CVSS 3.1MEDIUM 4.8
- TI-2026-08354 Uncaught exception vulnerability in Suprema's BioStar CVSS 4.0HIGH 8.7
Sources
- CVE-2026-9508 · CVE Program
- CVE-2026-9508 · NVD
- FIRST EPSS
- GHSA-3fmq-xr93-jqc5 · GitHub Advisory Database · CC BY 4.0
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