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CVE-2021-2451

Status: ModifiedHigh (7.5)—

Vulnerability in the Oracle Outside In Technology product of Oracle Fusion Middleware (component: Outside In Filters). The supported version that is affected is 8.5.5. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Outside In Technology. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Outside In Technology. Note: Outside In Technology is a suite of software development kits (SDKs).

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The protocol and CVSS Base Score depend on the software that uses Outside In Technology. The CVSS score assumes that the software passes data received over a network directly to Outside In Technology, but if data is not received over a network the CVSS score may be lower. CVSS 3.1 Base Score 7.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H).

CVSS

Exploitation probability (EPSS)

EPSS (Exploit Prediction Scoring System, FIRST) estimates how likely a vulnerability is to be exploited in the wild within 30 days. It complements CVSS (impact) and CISA KEV (confirmed exploitation).

Affected technologies (1)

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2021-2451",
  "cveTags": [],
  "metrics": {
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          "options": [
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          "version": "2.0.3",
          "timestamp": "2024-09-25T19:32:32.314579Z"
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          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
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          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
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        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
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    "cvssMetricV31": [
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      "affectedData": [
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              "version": "8.5.5"
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  "published": "2021-07-21T00:15:13.123",
  "references": [
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      "url": "https://www.oracle.com/security-alerts/cpujul2021.html",
      "tags": [
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  "vulnStatus": "Modified",
  "weaknesses": [
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      "lang": "en",
      "value": "Vulnerability in the Oracle Outside In Technology product of Oracle Fusion Middleware (component: Outside In Filters). The supported version that is affected is 8.5.5. Easily exploitable vulnerability allows unauthenticated attacker with network access via HTTP to compromise Oracle Outside In Technology. Successful attacks of this vulnerability can result in unauthorized ability to cause a hang or frequently repeatable crash (complete DOS) of Oracle Outside In Technology. Note: Outside In Technology is a suite of software development kits (SDKs). The protocol and CVSS Base Score depend on the software that uses Outside In Technology. The CVSS score assumes that the software passes data received over a network directly to Outside In Technology, but if data is not received over a network the CVSS score may be lower. CVSS 3.1 Base Score 7.5 (Availability impacts). CVSS Vector: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)."
    },
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      "lang": "es",
      "value": "Una vulnerabilidad en el producto Oracle Outside In Technology de Oracle Fusion Middleware (componente: Outside In Filters). La versión compatible que está afectada es 8.5.5. Una vulnerabilidad fácil de explotar permite a un atacante no autentificado con acceso a la red por medio de HTTP comprometer Oracle Outside In Technology. Los ataques con éxito de esta vulnerabilidad pueden dar como resultado la capacidad no autorizada de causar una suspensión o bloqueo repetible frecuentemente (DOS completo) de Oracle Outside In Technology. Nota: Outside In Technology es un conjunto de kits de desarrollo de software (SDK). El protocolo y la puntuación base CVSS dependen del software que utiliza Outside In Technology. La puntuación CVSS asume que el software pasa los datos recibidos a través de una red directamente a Outside In Technology, pero si los datos no se reciben a través de una red la puntuación CVSS puede ser menor. Puntuación base de CVSS 3.1: 7,5 (impactos en la disponibilidad). Vector CVSS: (CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H)."
    }
  ],
  "lastModified": "2026-06-17T03:49:32.390",
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  "sourceIdentifier": "secalert_us@oracle.com"
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