The CODESYS OPC DA Server prior V3.5.18.20 stores PLC passwords as plain text in its configuration file so that it is visible to all authorized Microsoft Windows users of the system.
The product transmits or stores authentication credentials, but it uses an insecure method that is susceptible to unauthorized interception and/or retrieval.
| Name | Vendor | Start Version | End Version |
|---|---|---|---|
| Opc_da_server | Codesys | 3.0.0 (including) | 3.5.18.20 (excluding) |