Vulnerability vector:
- Base vulnerability score (CVSSv3.1): CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Severity (CVSSv3.1): 9.8 (critical)
- Base vulnerability score (CVSSv4.0): CVSS:4.0/AV:N/AC:L/AT:N/PR:N/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N
- Severity (CVSSv4.0): 9.3 (critical)
Description:
The vulnerability was identified in OMRON CP1L-EL20DR-D all versions.
The discovered vulnerability may lead to a command that is not specified in FINS protocol, which can be executed without authentication.
A remote attacker may read/write in the device memory, which may lead to overwriting the firmware, causing a denial-of-service (DoS) condition, and/or arbitrary code execution.
Vulnerability status: Confirmed by vendor
Date of vulnerability remediation: 11.01.2023
Recommendations:
- Update PLC CP1L Series to version 1.1 or later
- Update CX-Programmer to version 9.6 or later
- Enable the "Extend protection password" function
Additional information: Security Bulletin
Researcher: Georgy Kiguradze (Positive Technologies)