Insecure File System Access in SICK Device via CROWN REST Interface
CVE-2026-2330

9.4CRITICAL

Key Information:

Vendor

Sick Ag

Status
Sick Lector85x
Sick Lector83x
Vendor
CVE Published:
6 March 2026

What is CVE-2026-2330?

An insecure direct object reference vulnerability exists in SICK devices utilizing the CROWN REST interface, allowing attackers to access restricted filesystem areas. Due to insufficient whitelist enforcement, certain internal directories intended solely for testing may be accessed without authentication. This could allow an attacker to upload a manipulated parameter file that activates after a device reboot, resulting in modifications to sensitive device settings, including critical network configurations and application parameters. Immediate action is recommended to mitigate potential risks.

Affected Version(s)

SICK Lector83x 0

SICK Lector85x 0

References

https://www.sick.com/psirt
x_SICK PSIRT Security Advisories
https://www.sick.com/media/docs/9/19/719/special_informat...
x_SICK Operating Guidelines
https://www.cisa.gov/resources-tools/resources/ics-recomm...
x_ICS-CERT recommended practices on Industrial Security

CVSS V3.1

Score:
9.4
Severity:
CRITICAL
Confidentiality:
Low
Integrity:
High
Availability:
Low
Attack Vector:
Network
Attack Complexity:
Low
Privileges Required:
None
User Interaction:
None
Scope:
Unchanged

Timeline

  • Vulnerability published

  • Vulnerability Reserved

.