CVE-2026-11841

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.

References

• 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-2026-0010.json
• https://www.sick.com/.well-known/csaf/white/2026/sca-2026-0010.pdf
• https://www.sick.com/media/docs/9/19/719/special_information_sick_operating_guidelines_cybersecurity_by_sick_en_im0106719.pdf