FKIE_CVE-2021-1647

Vulnerability from fkie_nvd - Published: 2021-01-12 20:15 - Updated: 2026-06-17 03:32
Severity
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
7.8 (High) - CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Summary
Microsoft Defender Remote Code Execution Vulnerability
References
secure@microsoft.comhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-1647Patch, Vendor Advisory
af854a3a-2127-422b-91ae-364da2661108https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-1647Patch, Vendor Advisory
134c704f-9b21-4f2e-91b3-4a467353bcc0https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-1647US Government Resource
Impacted products
Vendor Product Version
microsoft windows_defender -
microsoft windows_10_1507 -
microsoft windows_10_1607 -
microsoft windows_10_1803 -
microsoft windows_10_1809 -
microsoft windows_10_1909 -
microsoft windows_10_2004 -
microsoft windows_10_20h2 -
microsoft windows_7 -
microsoft windows_8.1 -
microsoft windows_rt_8.1 -
microsoft windows_server_1909 -
microsoft windows_server_2004 -
microsoft windows_server_2008 -
microsoft windows_server_2008 r2
microsoft windows_server_2012 -
microsoft windows_server_2012 r2
microsoft windows_server_2016 -
microsoft windows_server_2019 -
microsoft windows_server_20h2 -
microsoft security_essentials -
microsoft system_center_endpoint_protection -
microsoft system_center_endpoint_protection 2012
microsoft system_center_endpoint_protection 2012
To clipboard 

{
  "affected": [
    {
      "affectedData": [
        {
          "cpes": [
            "cpe:2.3:a:microsoft:system_center_endpoint_protection:-:*:*:*:*:*:*:*"
          ],
          "platforms": [
            "Unknown"
          ],
          "product": "Microsoft System Center Endpoint Protection",
          "vendor": "Microsoft",
          "versions": [
            {
              "status": "affected",
              "version": "N/A"
            }
          ]
        },
        {
          "cpes": [
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          ],
          "platforms": [
            "Unknown"
          ],
          "product": "Microsoft System Center 2012 R2 Endpoint Protection",
          "vendor": "Microsoft",
          "versions": [
            {
              "status": "affected",
              "version": "N/A"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:microsoft:security_essentials:-:*:*:*:*:*:*:*"
          ],
          "platforms": [
            "Unknown"
          ],
          "product": "Microsoft Security Essentials",
          "vendor": "Microsoft",
          "versions": [
            {
              "status": "affected",
              "version": "N/A"
            }
          ]
        },
        {
          "cpes": [
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          ],
          "platforms": [
            "Unknown"
          ],
          "product": "Microsoft System Center 2012 Endpoint Protection",
          "vendor": "Microsoft",
          "versions": [
            {
              "status": "affected",
              "version": "N/A"
            }
          ]
        },
        {
          "cpes": [
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          ],
          "platforms": [
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            "Windows 10 Version 1803 for x64-based Systems",
            "Windows 10 Version 1803 for ARM64-based Systems",
            "Windows 10 Version 1809 for 32-bit Systems",
            "Windows 10 Version 1809 for x64-based Systems",
            "Windows 10 Version 1809 for ARM64-based Systems",
            "Windows Server 2019",
            "Windows Server 2019 (Server Core installation)",
            "Windows 10 Version 1909 for 32-bit Systems",
            "Windows 10 Version 1909 for x64-based Systems",
            "Windows 10 Version 1909 for ARM64-based Systems",
            "Windows Server, version 1909 (Server Core installation)",
            "Windows 10 Version 2004 for 32-bit Systems",
            "Windows 10 Version 2004 for ARM64-based Systems",
            "Windows 10 Version 2004 for x64-based Systems",
            "Windows Server, version 2004 (Server Core installation)",
            "Windows 10 Version 20H2 for 32-bit Systems",
            "Windows 10 Version 20H2 for ARM64-based Systems",
            "Windows Server, version 20H2 (Server Core Installation)",
            "Windows 10 for 32-bit Systems",
            "Windows 10 for x64-based Systems",
            "Windows 10 Version 1607 for 32-bit Systems",
            "Windows 10 Version 1607 for x64-based Systems",
            "Windows Server 2016",
            "Windows Server 2016 (Server Core installation)",
            "Windows 7 for 32-bit Systems Service Pack 1",
            "Windows 7 for x64-based Systems Service Pack 1",
            "Windows 8.1 for 32-bit systems",
            "Windows 8.1 for x64-based systems",
            "Windows RT 8.1",
            "Windows Server 2008 for 32-bit Systems Service Pack 2",
            "Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)",
            "Windows Server 2008 R2 for x64-based Systems Service Pack 1",
            "Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)",
            "Windows Server 2012",
            "Windows Server 2012 (Server Core installation)",
            "Windows Server 2012 R2",
            "Windows Server 2012 R2 (Server Core installation)"
          ],
          "product": "Windows Defender",
          "vendor": "Microsoft",
          "versions": [
            {
              "status": "affected",
              "version": "N/A"
            }
          ]
        }
      ],
      "source": "secure@microsoft.com"
    }
  ],
  "cisaActionDue": "2021-11-17",
  "cisaExploitAdd": "2021-11-03",
  "cisaRequiredAction": "Apply updates per vendor instructions.",
  "cisaVulnerabilityName": "Microsoft Defender Remote Code Execution Vulnerability",
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  "cveTags": [],
  "descriptions": [
    {
      "lang": "en",
      "value": "Microsoft Defender Remote Code Execution Vulnerability"
    },
    {
      "lang": "es",
      "value": "Una Vulnerabilidad de Ejecuci\u00f3n de C\u00f3digo Remota de Microsoft Defender"
    }
  ],
  "id": "CVE-2021-1647",
  "lastModified": "2026-06-17T03:32:13.953",
  "metrics": {
    "cvssMetricV2": [
      {
        "acInsufInfo": false,
        "baseSeverity": "HIGH",
        "cvssData": {
          "accessComplexity": "LOW",
          "accessVector": "LOCAL",
          "authentication": "NONE",
          "availabilityImpact": "COMPLETE",
          "baseScore": 7.2,
          "confidentialityImpact": "COMPLETE",
          "integrityImpact": "COMPLETE",
          "vectorString": "AV:L/AC:L/Au:N/C:C/I:C/A:C",
          "version": "2.0"
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        "impactScore": 10.0,
        "obtainAllPrivilege": false,
        "obtainOtherPrivilege": false,
        "obtainUserPrivilege": false,
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      }
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          "confidentialityImpact": "HIGH",
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        "type": "Secondary"
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          "attackVector": "LOCAL",
          "availabilityImpact": "HIGH",
          "baseScore": 7.8,
          "baseSeverity": "HIGH",
          "confidentialityImpact": "HIGH",
          "integrityImpact": "HIGH",
          "privilegesRequired": "LOW",
          "scope": "UNCHANGED",
          "userInteraction": "NONE",
          "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H",
          "version": "3.1"
        },
        "exploitabilityScore": 1.8,
        "impactScore": 5.9,
        "source": "nvd@nist.gov",
        "type": "Secondary"
      }
    ],
    "ssvcV203": [
      {
        "source": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
        "ssvcData": {
          "id": "CVE-2021-1647",
          "options": [
            {
              "exploitation": "active"
            },
            {
              "automatable": "no"
            },
            {
              "technicalImpact": "total"
            }
          ],
          "role": "CISA Coordinator",
          "timestamp": "2024-01-24T15:56:07.173473Z",
          "version": "2.0.3"
        }
      }
    ]
  },
  "published": "2021-01-12T20:15:30.727",
  "references": [
    {
      "source": "secure@microsoft.com",
      "tags": [
        "Patch",
        "Vendor Advisory"
      ],
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    },
    {
      "source": "af854a3a-2127-422b-91ae-364da2661108",
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        "Vendor Advisory"
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    },
    {
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      "tags": [
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      ],
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-1647"
    }
  ],
  "sourceIdentifier": "secure@microsoft.com",
  "vulnStatus": "Analyzed",
  "weaknesses": [
    {
      "description": [
        {
          "lang": "en",
          "value": "NVD-CWE-noinfo"
        }
      ],
      "source": "nvd@nist.gov",
      "type": "Primary"
    }
  ]
}


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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.