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CVE-2020-0837

Status: ModifiedMedium (5.3)—

<p>An elevation of privilege vulnerability exists when Active Directory Federation Services (ADFS) improperly handles multi-factor authentication requests. An attacker who successfully exploited this vulnerability could bypass some, but not all, of the authentication factors.</p> <p>To exploit this vulnerability, an attacker could send a specially crafted authentication request.</p> <p>This security update corrects how ADFS handles multi-factor authentication requests.</p>

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)

CWEs

References

Raw JSON (NVD)

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{
  "id": "CVE-2020-0837",
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  "published": "2020-09-11T17:15:14.010",
  "references": [
    {
      "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0837",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "secure@microsoft.com"
    },
    {
      "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0837",
      "tags": [
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        "Vendor Advisory"
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      "source": "af854a3a-2127-422b-91ae-364da2661108"
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      "description": [
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          "value": "NVD-CWE-noinfo"
        }
      ]
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  "descriptions": [
    {
      "lang": "en",
      "value": "<p>An elevation of privilege vulnerability exists when Active Directory Federation Services (ADFS) improperly handles multi-factor authentication requests. An attacker who successfully exploited this vulnerability could bypass some, but not all, of the authentication factors.</p>\n<p>To exploit this vulnerability, an attacker could send a specially crafted authentication request.</p>\n<p>This security update corrects how ADFS handles multi-factor authentication requests.</p>"
    },
    {
      "lang": "es",
      "value": "Se presenta una vulnerabilidad de suplantación cuando Active Directory Federation Services (ADFS) maneja inapropiadamente peticiones de autenticación de múltiples factores. Para explotar esta vulnerabilidad, un atacante podría enviar una petición de autenticación especialmente diseñada, también se conoce como \"ADFS Spoofing Vulnerability\""
    }
  ],
  "lastModified": "2026-06-17T02:46:43.883",
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}