CVE-2022-29958

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La l\u00f3gica de control es descargada en el PLC bloque por bloque con una direcci\u00f3n de memoria determinada y un bloque de c\u00f3digo de m\u00e1quina. La l\u00f3gica que es descargada en el PLC no est\u00e1 autenticada criptogr\u00e1ficamente, lo que permite a un atacante ejecutar c\u00f3digo m\u00e1quina arbitrario en el m\u00f3dulo CPU del PLC en el contexto del tiempo de ejecuci\u00f3n. En el caso de la PC10G-CPU, y probablemente para otros m\u00f3dulos de CPU de la familia TOYOPUC, Es usado un procesador sin MPU o MMU y esto sin protecci\u00f3n de memoria o capacidades de separaci\u00f3n de privilegios, dando a un atacante el control total sobre la CPU."}], "id": "CVE-2022-29958", "lastModified": "2026-06-17T04:41:02.033", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.8, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "NONE", "scope": "UNCHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.9, "impactScore": 5.9, "source": "nvd@nist.gov", "type": "Primary"}]}, "published": "2022-07-26T22:15:10.963", "references": [{"source": "cve@mitre.org", "tags": ["Third Party Advisory", "US Government Resource"], "url": "https://www.cisa.gov/uscert/ics/advisories/icsa-22-172-02"}, {"source": "cve@mitre.org", "tags": ["Third Party Advisory"], "url": "https://www.forescout.com/blog/"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory", "US Government Resource"], "url": "https://www.cisa.gov/uscert/ics/advisories/icsa-22-172-02"}, {"source": "af854a3a-2127-422b-91ae-364da2661108", "tags": ["Third Party Advisory"], "url": "https://www.forescout.com/blog/"}], "sourceIdentifier": "cve@mitre.org", "vulnStatus": "Modified", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-345"}], "source": "nvd@nist.gov", "type": "Primary"}]}

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