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CVE-2020-0621

Status: ModifiedMedium (4.4)—

A security feature bypass vulnerability exists in Windows 10 when third party filters are called during a password update, aka 'Windows Security Feature Bypass Vulnerability'.

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-2020-0621",
  "cveTags": [],
  "metrics": {
    "cvssMetricV2": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "version": "2.0",
          "baseScore": 2.1,
          "accessVector": "LOCAL",
          "vectorString": "AV:L/AC:L/Au:N/C:N/I:P/A:N",
          "authentication": "NONE",
          "integrityImpact": "PARTIAL",
          "accessComplexity": "LOW",
          "availabilityImpact": "NONE",
          "confidentialityImpact": "NONE"
        },
        "acInsufInfo": false,
        "impactScore": 2.9,
        "baseSeverity": "LOW",
        "obtainAllPrivilege": false,
        "exploitabilityScore": 3.9,
        "obtainUserPrivilege": false,
        "obtainOtherPrivilege": false,
        "userInteractionRequired": false
      }
    ],
    "cvssMetricV31": [
      {
        "type": "Primary",
        "source": "nvd@nist.gov",
        "cvssData": {
          "scope": "UNCHANGED",
          "version": "3.1",
          "baseScore": 4.4,
          "attackVector": "LOCAL",
          "baseSeverity": "MEDIUM",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:H/UI:N/S:U/C:N/I:H/A:N",
          "integrityImpact": "HIGH",
          "userInteraction": "NONE",
          "attackComplexity": "LOW",
          "availabilityImpact": "NONE",
          "privilegesRequired": "HIGH",
          "confidentialityImpact": "NONE"
        },
        "impactScore": 3.6,
        "exploitabilityScore": 0.8
      }
    ]
  },
  "affected": [
    {
      "source": "secure@microsoft.com",
      "affectedData": [
        {
          "vendor": "Microsoft",
          "product": "Windows",
          "versions": [
            {
              "status": "affected",
              "version": "10 Version 1803 for 32-bit Systems"
            },
            {
              "status": "affected",
              "version": "10 Version 1803 for x64-based Systems"
            },
            {
              "status": "affected",
              "version": "10 Version 1803 for ARM64-based Systems"
            },
            {
              "status": "affected",
              "version": "10 Version 1809 for 32-bit Systems"
            },
            {
              "status": "affected",
              "version": "10 Version 1809 for x64-based Systems"
            },
            {
              "status": "affected",
              "version": "10 Version 1809 for ARM64-based Systems"
            },
            {
              "status": "affected",
              "version": "10 Version 1709 for 32-bit Systems"
            },
            {
              "status": "affected",
              "version": "10 Version 1709 for x64-based Systems"
            },
            {
              "status": "affected",
              "version": "10 Version 1709 for ARM64-based Systems"
            }
          ]
        },
        {
          "vendor": "Microsoft",
          "product": "Windows Server",
          "versions": [
            {
              "status": "affected",
              "version": "version 1803  (Core Installation)"
            },
            {
              "status": "affected",
              "version": "2019"
            },
            {
              "status": "affected",
              "version": "2019  (Core installation)"
            }
          ]
        }
      ]
    }
  ],
  "published": "2020-01-14T23:15:31.347",
  "references": [
    {
      "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0621",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "secure@microsoft.com"
    },
    {
      "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-0621",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
      "source": "af854a3a-2127-422b-91ae-364da2661108"
    }
  ],
  "vulnStatus": "Modified",
  "weaknesses": [
    {
      "type": "Primary",
      "source": "nvd@nist.gov",
      "description": [
        {
          "lang": "en",
          "value": "CWE-613"
        }
      ]
    }
  ],
  "descriptions": [
    {
      "lang": "en",
      "value": "A security feature bypass vulnerability exists in Windows 10 when third party filters are called during a password update, aka 'Windows Security Feature Bypass Vulnerability'."
    },
    {
      "lang": "es",
      "value": "Se presenta una vulnerabilidad de omisión de la característica de seguridad en Windows 10 cuando filtros de terceros son llamados durante una actualización de contraseña, también se conoce como \"Windows Security Feature Bypass Vulnerability\"."
    }
  ],
  "lastModified": "2026-06-17T02:46:11.430",
  "configurations": [
    {
      "nodes": [
        {
          "negate": false,
          "cpeMatch": [
            {
              "criteria": "cpe:2.3:o:microsoft:windows_10:1709:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "83B14968-3985-43C3-ACE5-8307196EFAE3"
            },
            {
              "criteria": "cpe:2.3:o:microsoft:windows_10:1803:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "7CB85C75-4D35-480E-843D-60579EC75FCB"
            },
            {
              "criteria": "cpe:2.3:o:microsoft:windows_10:1809:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "6B8F3DD2-A145-4AF1-8545-CC42892DA3D1"
            },
            {
              "criteria": "cpe:2.3:o:microsoft:windows_server_2016:1803:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "CAACE735-003E-4ACB-A82E-C0CF97D7F013"
            },
            {
              "criteria": "cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*",
              "vulnerable": true,
              "matchCriteriaId": "DB79EE26-FC32-417D-A49C-A1A63165A968"
            }
          ],
          "operator": "OR"
        }
      ]
    }
  ],
  "sourceIdentifier": "secure@microsoft.com"
}