CVE-2025-21547

Estado: AnalizadaCrítica (9.1)—

Vulnerability in the Oracle Hospitality OPERA 5 product of Oracle Hospitality Applications (component: Opera Servlet). Supported versions that are affected are 5.6.19.20, 5.6.25.8, 5.6.26.6 and 5.6.27.1. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Hospitality OPERA 5. Successful attacks of this vulnerability can result in unauthorized access to critical data or complete access to all Oracle Hospitality OPERA 5 accessible data and unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Hospitality OPERA 5. CVSS 3.1 Base Score 9.1 (Confidentiality and Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H).

CVSS

Versión: 3.1
Vector: CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H
Puntuación base: 9.1

Probabilidad de explotación (EPSS)

Probabilidad de explotación en los próximos 30 días: 0.59%
Percentil entre todas las CVEs puntuadas: 47
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).

🎯 Técnicas ATT&CK

Cómo se explota esta vulnerabilidad y qué consigue el atacante, en el lenguaje de MITRE ATT&CK.

ExplotaciónT1190 Exploit Public-Facing Applicationinitial access95 %
Impacto principalT1005 Data from Local Systemcollection90 %
Impacto secundarioT1499.004 Application or System Exploitationimpact85 %

Vector CVSS con AV:N/AC:L/PR:N/UI:N indica explotación remota sin autenticación (T1190). Impactos: C:H (acceso a datos críticos, T1005) y A:H (DoS del servlet, T1499.004).

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

Filter Network Traffic Vulnerability Scanning Privileged Account Management Network Segmentation Limit Access to Resource Over Network Application Isolation and Sandboxing

Tecnologías afectadas (1)

Oracle — Hospitality Opera 5

CWE

CWE-400

Referencias

https://www.oracle.com/security-alerts/cpujan2025.html

JSON original (NVD)

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          "timestamp": "2025-01-22T17:55:38.912423Z"
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          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "HIGH"
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      "affectedData": [
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  "published": "2025-01-21T21:15:21.110",
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      "tags": [
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      "source": "secalert_us@oracle.com"
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  "vulnStatus": "Analyzed",
  "weaknesses": [
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      "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
      "description": [
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          "value": "CWE-400"
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  "descriptions": [
    {
      "lang": "en",
      "value": "Vulnerability in the Oracle Hospitality OPERA 5 product of Oracle Hospitality Applications (component: Opera Servlet).  Supported versions that are affected are 5.6.19.20, 5.6.25.8, 5.6.26.6 and  5.6.27.1. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Hospitality OPERA 5.  Successful attacks of this vulnerability can result in  unauthorized access to critical data or complete access to all Oracle Hospitality OPERA 5 accessible data and unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Hospitality OPERA 5. CVSS 3.1 Base Score 9.1 (Confidentiality and Availability impacts).  CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H)."
    },
    {
      "lang": "es",
      "value": "Vulnerabilidad en el producto Oracle Hospitality OPERA 5 de Oracle Hospitality Applications (componente: Opera Servlet). Las versiones compatibles afectadas son 5.6.19.20, 5.6.25.8, 5.6.26.6 y 5.6.27.1. Esta vulnerabilidad, que se puede explotar fácilmente, permite que un atacante no autenticado con acceso a la red a través de HTTP ponga en peligro Oracle Hospitality OPERA 5. Los ataques exitosos de esta vulnerabilidad pueden dar como resultado un acceso no autorizado a datos críticos o un acceso completo a todos los datos accesibles de Oracle Hospitality OPERA 5 y la capacidad no autorizada de provocar un bloqueo o un bloqueo frecuente y repetible (DOS completo) de Oracle Hospitality OPERA 5. Puntuación base CVSS 3.1 9.1 (impactos en la confidencialidad y disponibilidad). Vector CVSS: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:N/A:H)."
    }
  ],
  "lastModified": "2026-06-17T08:43:42.997",
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