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.
Attack Parameters
Attack Vector
Network
Can be exploited remotely
Attack Complexity
Low
Easy to exploit
Privileges Required
None
No privileges needed
User Interaction
None
No user interaction needed
Impact Assessment
Confidentiality
High
Complete data leak
Integrity
High
Complete data modification
Availability
High
Complete denial of service
CVSS Vector v3.1
Weakness Type (CWE)
References 6
https://www.cisa.gov/resources-tools/resources/ics-recommended-practices
psirt@sick.de
https://www.first.org/cvss/calculator/3.1
psirt@sick.de
https://www.sick.com/.well-known/csaf/white/2026/sca-2026-0006.json
psirt@sick.de
https://www.sick.com/.well-known/csaf/white/2026/sca-2026-0006.pdf
psirt@sick.de
https://www.sick.com/media/docs/9/19/719/special_information_sick_operating_gui…
psirt@sick.de
https://www.sick.com/psirt
psirt@sick.de