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CRITICALCVE-2026-2331Published Modified CNA SICK AG

CVE-2026-2331: CVE-2026-2331

An attacker may perform unauthenticated read and write operations on sensitive filesystem areas via the AppEngine Fileaccess over HTTP due to improper access restrictions. A critical filesystem directory was unintentionally exposed through the HTTP-based file access feature, allowing access without authentication. This includes device parameter files, enabling an attacker to read and modify application settings, including customer-defined passwords. Additionally, exposure of the custom application directory may allow execution of arbitrary Lua code within the sandboxed AppEngine environment.

Metrics

CVSS v3.1
9.8
Severity
CRITICAL
Fixed in
Affected Products
2
Affected packages
  • SICK AG / SICK Lector85x
    ≤ 2.7.0
  • SICK AG / SICK Lector83x
    ≤ 2.7.0
CVSS Vector
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
CVE-2026-2331: CVE-2026-2331 | HarborGuard CVE