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CVE-2016-20012

Estado: ModificadaMedia (5.3)—💥 PoC

OpenSSH through 8.7 allows remote attackers, who have a suspicion that a certain combination of username and public key is known to an SSH server, to test whether this suspicion is correct. This occurs because a challenge is sent only when that combination could be valid for a login session. NOTE: the vendor does not recognize user enumeration as a vulnerability for this product

CVSS

Probabilidad de explotación (EPSS)

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).

💥 Exploits públicos

Hay código de explotación o plantillas de detección públicos. No es lo mismo que explotación activa confirmada (KEV), pero aumenta el riesgo: parchee con prioridad.

⚠️ Las pruebas de concepto de GitHub no están verificadas: algunas son falsas o contienen malware. No las ejecute nunca fuera de un laboratorio aislado.

Tecnologías afectadas (5)

Netapp — Clustered Data OntapNetapp — HCI Management NodeNetapp — Ontap Select Deploy Administration UtilityNetapp — SolidfireOpenbsd — Openssh

CWE

Referencias

JSON original (NVD)

Mostrar
{
  "id": "CVE-2016-20012",
  "cveTags": [
    {
      "tags": [
        "disputed"
      ],
      "sourceIdentifier": "cve@mitre.org"
    }
  ],
  "metrics": {
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        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2016-20012",
          "role": "CISA Coordinator",
          "options": [
            {
              "exploitation": "none"
            },
            {
              "automatable": "yes"
            },
            {
              "technicalImpact": "partial"
            }
          ],
          "version": "2.0.3",
          "timestamp": "2026-05-29T15:38:26.593640Z"
        }
      }
    ],
    "cvssMetricV2": [
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        "source": "nvd@nist.gov",
        "cvssData": {
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          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:M/Au:N/C:P/I:N/A:N",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "MEDIUM",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "PARTIAL"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 8.6,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
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          "integrityImpact": "NONE",
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          "attackComplexity": "LOW",
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  "affected": [
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  "published": "2021-09-15T20:15:07.310",
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    {
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  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-Other"
        }
      ]
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    {
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      "description": [
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          "lang": "en",
          "value": "CWE-203"
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  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "OpenSSH through 8.7 allows remote attackers, who have a suspicion that a certain combination of username and public key is known to an SSH server, to test whether this suspicion is correct. This occurs because a challenge is sent only when that combination could be valid for a login session. NOTE: the vendor does not recognize user enumeration as a vulnerability for this product"
    },
    {
      "lang": "es",
      "value": "** EN DISPTUTA ** OpenSSH versiones hasta 8.7, permite a atacantes remotos, que presentan la sospecha de que una determinada combinación de nombre de usuario y clave pública es conocida por un servidor SSH, comprobar si esta sospecha es correcta. Esto ocurre porque es enviado un desafío sólo cuando esa combinación podría ser válida para una sesión de inicio de sesión. NOTA: el proveedor no reconoce la enumeración de usuarios como una vulnerabilidad para este producto"
    }
  ],
  "lastModified": "2026-06-17T00:43:05.063",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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}