An attacker may access restricted filesystem areas on the device via the CROWN REST interface due to incomplete whitelist enforcement. Certain directories intended for internal testing were not covered by the whitelist and are accessible without authentication. An unauthenticated attacker could place a manipulated parameter file that becomes active after a reboot, allowing modification of critical device settings, including network configuration and application parameters.
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
Low
Partial 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