CVE-2026-20223
Estado: AnalizadaCrítica (10)—
A vulnerability in the access validation of internal REST APIs of Cisco Secure Workload could allow an unauthenticated, remote attacker to access site resources with the privileges of the Site Admin role.
Detalles técnicos trazas, registros y código del informe original
This vulnerability is due to insufficient validation and authentication when accessing REST API endpoints. An attacker could exploit this vulnerability if they are able to send a crafted API request to an affected endpoint. A successful exploit could allow the attacker to read sensitive information and make configuration changes across tenant boundaries with the privileges of the Site Admin user.
CVSS
- Versión: 3.1
- Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:C/C:H/I:H/A:N
- Puntuación base: 10
Probabilidad de explotación (EPSS)
- Probabilidad de explotación en los próximos 30 días: 0.83%
- Percentil entre todas las CVEs puntuadas: 56
- Fecha de la puntuación: 5/10/2026
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).
🎯 Técnicas ATT&CK
Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.
- Explotación
T1190Exploit Public-Facing Applicationinitial access95 % - Impacto principal
T1078Valid Accountsstealth · persistence · privilege escalation · initial access90 % - Impacto secundario
T1005Data from Local Systemcollection85 %
Vector AV:N/PR:N sin interacción indica explotación remota sin autenticación (T1190). La falta de validación de autenticación en REST APIs permite acceso no autenticado con privilegios de Site Admin (T1078), con capacidad de lectura de información sensible (T1005).
Inferido por nuestro agente de análisis a partir de la descripción oficial, el vector CVSS y la CWE, y comprobado por un supervisor. Puede contener errores.
🛡️ Mitigaciones ATT&CK que cubren estas técnicas
Tecnologías afectadas (1)
CWE
- CWE-306
Referencias
JSON original (NVD)
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"published": "2026-05-20T17:16:20.400",
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"value": "A vulnerability in the access validation of internal REST APIs of Cisco Secure Workload could allow an unauthenticated, remote attacker to access site resources with the privileges of the Site Admin role.\r\n\r\nThis vulnerability is due to insufficient validation and authentication when accessing REST API endpoints. An attacker could exploit this vulnerability if they are able to send a crafted API request to an affected endpoint. A successful exploit could allow the attacker to read sensitive information and make configuration changes across tenant boundaries with the privileges of the Site Admin user. "
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"value": "Una vulnerabilidad en la validación de acceso de las API REST internas de Cisco Secure Workload podría permitir a un atacante remoto no autenticado acceder a los recursos del sitio con los privilegios del rol de Administrador del Sitio.\n\nEsta vulnerabilidad se debe a una validación y autenticación insuficientes al acceder a los puntos finales de la API REST. Un atacante podría explotar esta vulnerabilidad si es capaz de enviar una solicitud de API manipulada a un punto final afectado. Un exploit exitoso podría permitir al atacante leer información sensible y realizar cambios de configuración a través de los límites de los inquilinos con los privilegios del usuario Administrador del Sitio."
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