CVE intelligence and bounded remediation

CVE-2022-45794 — Omron Sysmac Cj2H-Cpu64-Eip Firmware security vulnerability

High CVSS 8.6

An attacker with network access to the affected PLC (CJ-series and CS-series PLCs, all versions) may use a network protocol to read and write files on the PLC internal memory and memory card.

Severity
High
CVSS
8.6 (3.1)
Published
2024-01-10
CISA KEV
Not currently listed
Ecosystem
operating-system
Weaknesses
CWE-306

Affected products

  • omron / sysmac_cj2h-cpu64-eip_firmware
  • omron / sysmac_cj2h-cpu64_firmware
  • omron / sysmac_cj2h-cpu65-eip_firmware
  • omron / sysmac_cj2h-cpu65_firmware
  • omron / sysmac_cj2h-cpu66-eip_firmware
  • omron / sysmac_cj2h-cpu66_firmware

Showing 6 representative product identities from 41 source matches. Confirm exact affected versions with the linked vendor and NVD evidence.

Matched remediation archetype

Authentication bypass and missing authentication

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Check exposure

  • Map every affected endpoint and protocol path, including alternate ports, legacy routes, recovery flows, service accounts, and machine-to-machine access.
  • Confirm which deployments enable the affected authentication mode and whether the interface is reachable from untrusted networks.
  • Review session, token, credential, and proxy trust configuration without attempting account takeover.

Remediate safely

  • Apply the supported fix and centralize fail-closed authentication before protected request handling.
  • Remove default or embedded credentials, rotate affected secrets and sessions, and bind authentication decisions to the intended audience and channel.
  • Add negative tests for alternate routes, malformed or absent credentials, recovery flows, and proxy-derived identity.

Authoritative sources

Complete CVE record and remediation plan

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