Jtekt · Toyopuc Plc · CVE-2021-27477
**Name of the Vulnerable Software and Affected Versions**
JTEKT Corporation TOYOPUC PLC versions PC10G-CPU, 2PORT-EFR, Plus CPU, Plus EX, Plus EX2, Plus EFR, Plus EFR2, Plus 2P-EFR, PC10P-DP, PC10P-DP-IO, Plus BUS-EX, Nano 10GX, Nano 2ET, PC10PE, PC10PE-16/16P, PC10E, FL/ET-T-V2H, PC10B, PC10B-P, Nano CPU, PC10P, and PC10GE
**Description**
When the affected products receive an invalid frame, the outside area of a receive buffer for FL-net are overwritten. As a result, the PLC CPU detects a system error, and the affected products stop.
**Recommendations**
At the moment, there is no information about a newer version that contains a fix for this vulnerability.