CVE-2022-31206
Estado: ModificadaCrítica (9.8)—
The Omron SYSMAC Nx product family PLCs (NJ series, NY series, NX series, and PMAC series) through 2022-005-18 lack cryptographic authentication. These PLCs are programmed using the SYMAC Studio engineering software (which compiles IEC 61131-3 conformant POU code to native machine code for execution by the PLC's runtime). The resulting machine code is executed by a runtime, typically controlled by a real-time operating system.
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The logic that is downloaded to the PLC does not seem to be cryptographically authenticated, allowing an attacker to manipulate transmitted object code to the PLC and execute arbitrary machine code on the processor of the PLC's CPU module in the context of the runtime. In the case of at least the NJ series, an RTOS and hardware combination is used that would potentially allow for memory protection and privilege separation and thus limit the impact of code execution. However, it was not confirmed whether these sufficiently segment the runtime from the rest of the RTOS.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H
- Puntuación base: 9.8
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 1.09%
- Percentil entre todas las CVEs puntuadas: 64
- Fecha de la puntuación: 6/10/2026
EPSS (Exploit Prediction Scoring System, de FIRST) estima la probabilidad de que una vulnerabilidad sea explotada en 30 días. Complementa a CVSS (impacto) y a CISA KEV (explotación confirmada).
Tecnologías afectadas (25)
Omron — Nj101-1000 FirmwareOmron — Nj101-1020 FirmwareOmron — Nj101-9000 FirmwareOmron — Nj101-9020 FirmwareOmron — Nj301-1100 FirmwareOmron — Nj301-1200 FirmwareOmron — Nj501-1300 FirmwareOmron — Nj501-1320 FirmwareOmron — Nj501-1340 FirmwareOmron — Nj501-1400 FirmwareOmron — Nj501-1420 FirmwareOmron — Nj501-1500 FirmwareOmron — Nj501-1520 FirmwareOmron — Nj501-4300 FirmwareOmron — Nj501-4320 FirmwareOmron — Nj501-4400 FirmwareOmron — Nj501-4500 FirmwareOmron — Nj501-5300-1 FirmwareOmron — Nj501-5300 FirmwareOmron — Nx701-1600 FirmwareOmron — Nx701-1620 FirmwareOmron — Nx701-1700 FirmwareOmron — Nx701-1720 FirmwareOmron — Nx701-z600 FirmwareOmron — Nx701-z700 Firmware
CWE
- CWE-347
Referencias
JSON original (NVD)
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