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CVE-2020-1084

Status: ModifiedMedium (5.5)—

A Denial Of Service vulnerability exists when Connected User Experiences and Telemetry Service fails to validate certain function values. An attacker who successfully exploited this vulnerability could deny dependent security feature functionality. To exploit this vulnerability, an attacker would have to log on to an affected system and run a specially crafted application. The security update addresses the vulnerability by correcting how the Connected User Experiences and Telemetry Service validates certain function values.

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 (3)

Microsoft — Windows 10Microsoft — Windows Server 2016Microsoft — Windows Server 2019

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2020-1084",
  "cveTags": [],
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          "vectorString": "AV:L/AC:L/Au:N/C:N/I:N/A:P",
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          "integrityImpact": "NONE",
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          "availabilityImpact": "PARTIAL",
          "confidentialityImpact": "NONE"
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        "obtainAllPrivilege": false,
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          "product": "Windows Server, version 1803  (Server Core Installation)",
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              "version": "10.0.0",
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              "version": "10.0.0",
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          "platforms": [
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  ],
  "published": "2020-05-21T23:15:13.647",
  "references": [
    {
      "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-1084",
      "source": "secure@microsoft.com"
    },
    {
      "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1084",
      "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": "A Denial Of Service vulnerability exists when Connected User Experiences and Telemetry Service fails to validate certain function values.\nAn attacker who successfully exploited this vulnerability could deny dependent security feature functionality.\nTo exploit this vulnerability, an attacker would have to log on to an affected system and run a specially crafted application.\nThe security update addresses the vulnerability by  correcting how the Connected User Experiences and Telemetry Service validates certain function values."
    },
    {
      "lang": "es",
      "value": "Se presenta una vulnerabilidad de denegación de servicio cuando Connected User Experiences y Telemetry Service presentan un fallo al comprobar determinados valores de función. Un atacante que explotó con éxito esta vulnerabilidad podría denegar la funcionalidad de la característica de seguridad dependiente. Para explotar esta vulnerabilidad, un atacante tendría que iniciar sesión en un sistema afectado y ejecutar una aplicación especialmente diseñada. La actualización de seguridad aborda la vulnerabilidad al corregir la forma en que el Connected User Experiences y Telemetry Service comprueba determinados valores de función, también se conoce como \"\"Connected User Experiences and Telemetry Service Denial of Service Vulnerability\"\". Este ID de CVE es diferente de CVE-2020-1123."
    }
  ],
  "lastModified": "2026-08-19T17:17:15.400",
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}