CVE-2023-0811criticalCWE-284

CVE-2023-0811: critical vulnerability in Omron CJ1M SYSMAC CJ-series

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28Vexday Risk Score

No sign of exploitation. No public exploitation artifact known so far.

ssvc Trackcvss 9.1epss 0.6%
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.
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:H/A:H
Affected products
Omron · CJ1M SYSMAC CJ-seriesOmron · CJ1M SYSMAC CP-seriesOmron · CJ1M SYSMAC CS-series