CVE-2026-20147

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To exploit this vulnerability, the attacker must have valid administrative credentials.\r\n\r\nThis vulnerability is due to insufficient validation of user-supplied input. An attacker could exploit this vulnerability by sending a crafted HTTP request to an affected device. A successful exploit could allow the attacker to obtain user-level access to the underlying operating system and then elevate privileges to root. In single-node ISE deployments, successful exploitation of this vulnerability could cause the affected ISE node to become unavailable, resulting in a denial of service (DoS) condition. In that condition, endpoints that have not already authenticated would be unable to access the network until the node is restored."}, {"lang": "es", "value": "Una vulnerabilidad en Cisco ISE y Cisco ISE-PIC podr\u00eda permitir a un atacante remoto autenticado ejecutar comandos arbitrarios en el sistema operativo subyacente de un dispositivo afectado. Para explotar esta vulnerabilidad, el atacante debe tener credenciales administrativas v\u00e1lidas.\n\nEsta vulnerabilidad se debe a una validaci\u00f3n insuficiente de la entrada proporcionada por el usuario. Un atacante podr\u00eda explotar esta vulnerabilidad enviando una solicitud HTTP manipulada a un dispositivo afectado. Un exploit exitoso podr\u00eda permitir al atacante obtener acceso a nivel de usuario al sistema operativo subyacente y luego elevar privilegios a root. En implementaciones de ISE de nodo \u00fanico, la explotaci\u00f3n exitosa de esta vulnerabilidad podr\u00eda causar que el nodo ISE afectado deje de estar disponible, lo que resultar\u00eda en una condici\u00f3n de denegaci\u00f3n de servicio (DoS). En esa condici\u00f3n, los puntos finales que a\u00fan no se han autenticado no podr\u00edan acceder a la red hasta que se restaure el nodo."}], "id": "CVE-2026-20147", "lastModified": "2026-10-26T22:10:00.163", "metrics": {"cvssMetricV31": [{"cvssData": {"attackComplexity": "LOW", "attackVector": "NETWORK", "availabilityImpact": "HIGH", "baseScore": 9.9, "baseSeverity": "CRITICAL", "confidentialityImpact": "HIGH", "integrityImpact": "HIGH", "privilegesRequired": "LOW", "scope": "CHANGED", "userInteraction": "NONE", "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:C/C:H/I:H/A:H", "version": "3.1"}, "exploitabilityScore": 3.1, "impactScore": 6.0, "source": "psirt@cisco.com", "type": "Secondary"}], "ssvcV203": [{"source": "134c704f-9b21-4f2e-91b3-4a467353bcc0", "ssvcData": {"id": "CVE-2026-20147", "options": [{"exploitation": "none"}, {"automatable": "no"}, {"technicalImpact": "total"}], "role": "CISA Coordinator", "timestamp": "2026-04-15T00:00:00+00:00", "version": "2.0.3"}}]}, "published": "2026-04-15T17:17:02.410", "references": [{"source": "psirt@cisco.com", "tags": ["Vendor Advisory"], "url": "https://sec.cloudapps.cisco.com/security/center/content/CiscoSecurityAdvisory/cisco-sa-ise-rce-traversal-8bYndVrZ"}], "sourceIdentifier": "psirt@cisco.com", "vulnStatus": "Analyzed", "weaknesses": [{"description": [{"lang": "en", "value": "CWE-77"}], "source": "psirt@cisco.com", "type": "Secondary"}]}

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