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seguridad de la serie MELSEC iQ-R de Mitsubishi Electric R08/16/32/120SFCPU, versiones de firmware \"26\" y anteriores, y en los m\u00f3dulos de CPU de proceso SIL2 de la serie MELSEC iQ-R de Mitsubishi Electric R08/16/32/120PSFCPU, todas las versiones, permite que un atacante remoto no autenticado inicie sesi\u00f3n en el objetivo de forma no autorizada mediante el olfateo del tr\u00e1fico de red y la obtenci\u00f3n de credenciales al registrar informaci\u00f3n de usuario en el objetivo o al cambiar una contrase\u00f1a"}], "id": "CVE-2021-20597", "lastModified": "2026-06-17T03:34:05.540", "metrics": {"cvssMetricV2": [{"acInsufInfo": false, "baseSeverity": "MEDIUM", "cvssData": {"accessComplexity": "LOW", "accessVector": "NETWORK", "authentication": "NONE", "availabilityImpact": "NONE", "baseScore": 6.4, "confidentialityImpact": "PARTIAL", "integrityImpact": "PARTIAL", "vectorString": "AV:N/AC:L/Au:N/C:P/I:P/A:N", "version": "2.0"}, "exploitabilityScore": 10.0, "impactScore": 4.9, 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