Description
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.
Affected products
| Vendor | Product | Affected | Fixed |
|---|---|---|---|
| SICK | SICK Lector85x | 2.6.0 – ≤ 2.7.0 | — |
| SICK | SICK Lector83x | 2.6.0 – ≤ 2.7.0 | — |
Advisories 1
- SCA-2026-0006 Vulnerabilities affecting SICK Lector85x and SICK Lector83x SICK PSIRT · Mar 6, 2026
References
- https://www.sick.com/psirt
- https://www.sick.com/media/docs/9/19/719/special_information_sick_operating_guidelines_cybersecurity_by_sick_en_im0106719.pdf
- https://www.cisa.gov/resources-tools/resources/ics-recommended-practices
- https://www.first.org/cvss/calculator/3.1
- https://www.sick.com/.well-known/csaf/white/2026/sca-2026-0006.json
- https://www.sick.com/.well-known/csaf/white/2026/sca-2026-0006.pdf vendor-advisory