CVE-2026-9508

Critical

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.

SeverityCritical

CVSS10.0

Exploit probability—

ProductBioStar 2 (server)

PublishedMay 29, 2026

First seenMay 29, 2026

Weakness typeCWE-732CWE-732

How to fix

Patches

incibe.es/en/incibe-cert/notices/aviso/multiple-vulnerabilities-supremas-biostar

Affected products

Product	Affected versions	Fixed in
Suprema BioStar 2 (server)	v2.9.3 ≤ v ≤ v2.9.11	—

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