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CVE-2020-14258

Estado: ModificadaAlta (7.5)—

HCL Notes is susceptible to a Denial of Service vulnerability caused by improper validation of user-supplied input. A remote unauthenticated attacker could exploit this vulnerability using a specially-crafted email message to hang the client. Versions 9, 10 and 11 are affected.

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).

Tecnologías afectadas (1)

Hcltech — Notes

CWE

Referencias

JSON original (NVD)

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{
  "id": "CVE-2020-14258",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 5,
          "accessVector": "NETWORK",
          "vectorString": "AV:N/AC:L/Au:N/C:N/I:N/A:P",
          "authentication": "NONE",
          "integrityImpact": "NONE",
          "accessComplexity": "LOW",
          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "MEDIUM",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 10,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 7.5,
          "attackVector": "NETWORK",
          "baseSeverity": "HIGH",
          "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H",
          "integrityImpact": "NONE",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "HIGH",
          "privilegesRequired": "NONE",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 3.9
      }
    ]
  },
  "affected": [
    {
      "source": "psirt@hcl.com",
      "affectedData": [
        {
          "vendor": "HCL",
          "product": "HCL Notes",
          "versions": [
            {
              "status": "affected",
              "version": "v9"
            },
            {
              "status": "affected",
              "version": "v10"
            },
            {
              "status": "affected",
              "version": "v11"
            }
          ]
        }
      ]
    }
  ],
  "published": "2020-11-21T18:15:11.743",
  "references": [
    {
      "url": "https://support.hcltechsw.com/csm?id=kb_article&sysparm_article=KB0085304",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "psirt@hcl.com"
    },
    {
      "url": "https://support.hcltechsw.com/csm?id=kb_article&sysparm_article=KB0085304",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-20"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "HCL Notes is susceptible to a Denial of Service vulnerability caused by improper validation of user-supplied input. A remote unauthenticated attacker could exploit this vulnerability using a specially-crafted email message to hang the client. Versions 9, 10 and 11 are affected."
    },
    {
      "lang": "es",
      "value": "HCL Notes es susceptible a una vulnerabilidad de Denegación de Servicio causada por una comprobación inapropiada de la entrada suministrada por el usuario. Un atacante remoto no autenticado podría explotar esta vulnerabilidad usando un mensaje de correo electrónico especialmente diseñado para colgar al cliente. Las versiones 9, 10 y 11 están afectadas"
    }
  ],
  "lastModified": "2026-06-17T02:54:27.617",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
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            },
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              "vulnerable": true,
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            },
            {
              "criteria": "cpe:2.3:a:hcltech:notes:11.0:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "06AD0ACF-704C-4BBE-9059-1A1E9008D7A4"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "psirt@hcl.com"
}