Cleartext Password Vulnerability in Omron PLCs

CVE-2022-31204

What is CVE-2022-31204?

The Omron CS, CJ, and CP series PLCs have a vulnerability that permits the use of cleartext passwords within their configuration settings. This issue stems from the UM Protection feature that allows users to set passwords for sensitive engineering tasks, such as uploading and downloading logic and project files. Unfortunately, the commands used to set and clear these passwords are transmitted in cleartext, making them susceptible to interception by malicious actors, thus compromising the security of these critical industrial control systems.

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