Omron CJ1M unit v4.0 and prior has improper access controls on the memory region where the UM password is stored. If an adversary issues a PROGRAM AREA WRITE command to a specific memory region, they could overwrite the password. This may lead to disabling UM protections or setting a non-ASCII password (non-keyboard characters) and preventing an engineer from viewing or modifying the user program.
History

No history.

cve-icon MITRE

Status: PUBLISHED

Assigner: icscert

Published: 2023-03-16T17:41:25.525Z

Updated: 2024-08-02T05:24:34.505Z

Reserved: 2023-02-13T15:41:55.590Z

Link: CVE-2023-0811

cve-icon Vulnrichment

No data.

cve-icon NVD

Status : Modified

Published: 2023-03-16T18:15:11.160

Modified: 2023-11-07T04:01:30.170

Link: CVE-2023-0811

cve-icon Redhat

No data.