CVE-2021-1647 (GCVE-0-2021-1647)

Vulnerability from cvelistv5 – Published: 2021-01-12 19:42 – Updated: 2025-10-21 23:35
VLAI CISA KEV KEVintel KEV
Title
Microsoft Defender Remote Code Execution Vulnerability
Summary
Microsoft Defender Remote Code Execution Vulnerability
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
SSVC
Exploitation: active Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
Assigner
References
Impacted products
Vendor Product Version
Microsoft Microsoft System Center Endpoint Protection Affected: N/A
    cpe:2.3:a:microsoft:system_center_endpoint_protection:-:*:*:*:*:*:*:*
 Create a notification for this product.
Microsoft Microsoft System Center 2012 R2 Endpoint Protection Affected: N/A
    cpe:2.3:a:microsoft:system_center_endpoint_protection:2012:r2:*:*:*:*:*:*
 Create a notification for this product.
Microsoft Microsoft Security Essentials Affected: N/A
    cpe:2.3:a:microsoft:security_essentials:-:*:*:*:*:*:*:*
 Create a notification for this product.
Microsoft Microsoft System Center 2012 Endpoint Protection Affected: N/A
    cpe:2.3:a:microsoft:system_center_endpoint_protection:2012:-:*:*:*:*:*:*
 Create a notification for this product.
Microsoft Windows Defender Affected: N/A
    cpe:2.3:a:microsoft:windows_defender:-:*:*:*:*:*:*:*
 Create a notification for this product.
Date Public
2021-01-12 08:00
CISA KEV
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 51fed59d-b965-46d3-8813-c8e4508968e2

Vulnerability ID: CVE-2021-1647

Status: Confirmed

Status Updated: 2021-11-03 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2021-11-03
Asserted: 2021-11-03
Scope
Notes: KEV entry: Microsoft Defender Remote Code Execution Vulnerability | Affected: Microsoft / Defender | Description: Microsoft Defender contains an unspecified vulnerability that allows for remote code execution. | Required action: Apply updates per vendor instructions. | Due date: 2021-11-17 | Known ransomware campaign use (KEV): Unknown | Notes (KEV): https://nvd.nist.gov/vuln/detail/CVE-2021-1647
Evidence

Type: Vendor Report

Signal: Successful Exploitation

Confidence: 80%

Source: cisa-kev

Details
Cwes CWE-122 CWE-1285
Feed CISA Known Exploited Vulnerabilities Catalog
Product Defender
Due Date 2021-11-17
Date Added 2021-11-03
Vendorproject Microsoft
Vulnerabilityname Microsoft Defender Remote Code Execution Vulnerability
Knownransomwarecampaignuse Unknown
References
Created: 2026-02-02 12:28 UTC | Updated: 2026-02-06 07:17 UTC
KEVintel KEV
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 8baba303-1340-480b-b2f6-76549134dd52

Vulnerability ID: CVE-2021-1647

Status: Confirmed

Status Updated: 2021-11-03 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2021-11-03
Asserted: 2021-11-03
Scope
Notes: KEVIntel entry: Microsoft Defender Remote Code Execution Vulnerability | Affected: Microsoft / Microsoft System Center Endpoint Protection, Microsoft System Center 2012 R2 Endpoint Protection, Microsoft Security Essentials, Microsoft System Center 2012 Endpoint Protection, Windows Defender | CVSS: 7.8 (HIGH) | Used in malware: unknown | Not yet in CISA KEV: False
Evidence

Type: Public Report

Signal: Successful Exploitation

Confidence: 70%

Source: kevintel

Details
Feed KEVIntel (kevintel.com)
Title Microsoft Defender Remote Code Execution Vulnerability
Vendor Microsoft
Product Microsoft System Center Endpoint Protection, Microsoft System Center 2012 R2 Endpoint Protection, Microsoft Security Essentials, Microsoft System Center 2012 Endpoint Protection, Windows Defender
Added Date 2021-11-03T00:00:00.000Z
Cvss Score 7.8
Epss Score None
Cvss Severity HIGH
Epss Percentile None
Used In Malware unknown
Ahead Of Cisa Kev None
Not Yet In Cisa Kev False
References
Created: 2026-06-19 12:47 UTC | Updated: 2026-06-19 12:47 UTC
Show details on NVD website
To clipboard 

{
  "containers": {
    "adp": [
      {
        "providerMetadata": {
          "dateUpdated": "2024-08-03T16:18:11.008Z",
          "orgId": "af854a3a-2127-422b-91ae-364da2661108",
          "shortName": "CVE"
        },
        "references": [
          {
            "tags": [
              "x_refsource_MISC",
              "x_transferred"
            ],
            "url": "https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-1647"
          }
        ],
        "title": "CVE Program Container"
      },
      {
        "metrics": [
          {
            "other": {
              "content": {
                "id": "CVE-2021-1647",
                "options": [
                  {
                    "Exploitation": "active"
                  },
                  {
                    "Automatable": "no"
                  },
                  {
                    "Technical Impact": "total"
                  }
                ],
                "role": "CISA Coordinator",
                "timestamp": "2024-01-24T15:56:07.173473Z",
                "version": "2.0.3"
              },
              "type": "ssvc"
            }
          },
          {
            "other": {
              "content": {
                "dateAdded": "2021-11-03",
                "reference": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-1647"
              },
              "type": "kev"
            }
          }
        ],
        "problemTypes": [
          {
            "descriptions": [
              {
                "description": "CWE-noinfo Not enough information",
                "lang": "en",
                "type": "CWE"
              }
            ]
          }
        ],
        "providerMetadata": {
          "dateUpdated": "2025-10-21T23:35:30.058Z",
          "orgId": "134c704f-9b21-4f2e-91b3-4a467353bcc0",
          "shortName": "CISA-ADP"
        },
        "references": [
          {
            "tags": [
              "government-resource"
            ],
            "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-1647"
          }
        ],
        "timeline": [
          {
            "lang": "en",
            "time": "2021-11-03T00:00:00.000Z",
            "value": "CVE-2021-1647 added to CISA KEV"
          }
        ],
        "title": "CISA ADP Vulnrichment"
      }
    ],
    "cna": {
      "affected": [
        {
          "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": [
            "cpe:2.3:a:microsoft:system_center_endpoint_protection:2012:r2:*:*:*:*:*:*"
          ],
          "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": [
            "cpe:2.3:a:microsoft:system_center_endpoint_protection:2012:-:*:*:*:*:*:*"
          ],
          "platforms": [
            "Unknown"
          ],
          "product": "Microsoft System Center 2012 Endpoint Protection",
          "vendor": "Microsoft",
          "versions": [
            {
              "status": "affected",
              "version": "N/A"
            }
          ]
        },
        {
          "cpes": [
            "cpe:2.3:a:microsoft:windows_defender:-:*:*:*:*:*:*:*"
          ],
          "platforms": [
            "Windows 10 Version 1803 for 32-bit Systems",
            "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"
            }
          ]
        }
      ],
      "datePublic": "2021-01-12T08:00:00.000Z",
      "descriptions": [
        {
          "lang": "en-US",
          "value": "Microsoft Defender Remote Code Execution Vulnerability"
        }
      ],
      "metrics": [
        {
          "cvssV3_1": {
            "baseScore": 7.8,
            "baseSeverity": "HIGH",
            "vectorString": "CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C",
            "version": "3.1"
          },
          "format": "CVSS",
          "scenarios": [
            {
              "lang": "en-US",
              "value": "GENERAL"
            }
          ]
        }
      ],
      "problemTypes": [
        {
          "descriptions": [
            {
              "description": "Remote Code Execution",
              "lang": "en-US",
              "type": "Impact"
            }
          ]
        }
      ],
      "providerMetadata": {
        "dateUpdated": "2024-10-08T16:17:02.566Z",
        "orgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
        "shortName": "microsoft"
      },
      "references": [
        {
          "name": "Microsoft Defender Remote Code Execution Vulnerability",
          "tags": [
            "vendor-advisory"
          ],
          "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-1647"
        }
      ],
      "title": "Microsoft Defender Remote Code Execution Vulnerability"
    }
  },
  "cveMetadata": {
    "assignerOrgId": "f38d906d-7342-40ea-92c1-6c4a2c6478c8",
    "assignerShortName": "microsoft",
    "cveId": "CVE-2021-1647",
    "datePublished": "2021-01-12T19:42:01.000Z",
    "dateReserved": "2020-12-02T00:00:00.000Z",
    "dateUpdated": "2025-10-21T23:35:30.058Z",
    "state": "PUBLISHED"
  },
  "dataType": "CVE_RECORD",
  "dataVersion": "5.1",
  "vulnerability-lookup:meta": {
    "cisa_known_exploited": {
      "cveID": "CVE-2021-1647",
      "cwes": "[\"CWE-122\", \"CWE-1285\"]",
      "dateAdded": "2021-11-03",
      "dueDate": "2021-11-17",
      "knownRansomwareCampaignUse": "Unknown",
      "notes": "https://nvd.nist.gov/vuln/detail/CVE-2021-1647",
      "product": "Defender",
      "requiredAction": "Apply updates per vendor instructions.",
      "shortDescription": "Microsoft Defender contains an unspecified vulnerability that allows for remote code execution.",
      "vendorProject": "Microsoft",
      "vulnerabilityName": "Microsoft Defender Remote Code Execution Vulnerability"
    },
    "epss": {
      "cve": "CVE-2021-1647",
      "date": "2026-06-18",
      "epss": "0.39653",
      "percentile": "0.98438"
    },
    "fkie_nvd": {
      "cisaActionDue": "2021-11-17",
      "cisaExploitAdd": "2021-11-03",
      "cisaRequiredAction": "Apply updates per vendor instructions.",
      "cisaVulnerabilityName": "Microsoft Defender Remote Code Execution Vulnerability",
      "configurations": "[{\"operator\": \"AND\", \"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:microsoft:windows_defender:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"794244D1-F317-44C8-8338-3DA74E71D4B0\"}]}, {\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": false, \"criteria\": \"cpe:2.3:o:microsoft:windows_10_1507:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"542DAEEC-73CC-46C6-A630-BF474A3446AC\"}, {\"vulnerable\": false, \"criteria\": \"cpe:2.3:o:microsoft:windows_10_1607:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"61019899-D7AF-46E4-A72C-D189180F66AB\"}, {\"vulnerable\": false, \"criteria\": \"cpe:2.3:o:microsoft:windows_10_1803:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"00345596-E9E0-4096-8DC6-0212F4747A13\"}, {\"vulnerable\": false, \"criteria\": \"cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"2E332666-2E03-468E-BC30-299816D6E8ED\"}, {\"vulnerable\": false, \"criteria\": \"cpe:2.3:o:microsoft:windows_10_1909:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"A1B570A8-ED1A-46B6-B8AB-064445F8FC4C\"}, {\"vulnerable\": false, \"criteria\": \"cpe:2.3:o:microsoft:windows_10_2004:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"D4DBE5B2-AE10-4251-BCDA-DC5EDEE6EE67\"}, {\"vulnerable\": false, \"criteria\": \"cpe:2.3:o:microsoft:windows_10_20h2:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"6AFD13A6-A390-4400-9029-2F4058CA17E2\"}, {\"vulnerable\": false, \"criteria\": \"cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:*:*\", \"matchCriteriaId\": \"C2B1C231-DE19-4B8F-A4AA-5B3A65276E46\"}, {\"vulnerable\": false, \"criteria\": \"cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"E93068DB-549B-45AB-8E5C-00EB5D8B5CF8\"}, {\"vulnerable\": false, \"criteria\": \"cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"C6CE5198-C498-4672-AF4C-77AB4BE06C5C\"}, {\"vulnerable\": false, \"criteria\": \"cpe:2.3:o:microsoft:windows_server_1909:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"ADE7E7B1-64AC-4986-A50B-0918A42C05BB\"}, {\"vulnerable\": false, \"criteria\": \"cpe:2.3:o:microsoft:windows_server_2004:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"62224791-644C-4D1F-AD77-56B16CF27630\"}, {\"vulnerable\": false, \"criteria\": \"cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:*\", \"matchCriteriaId\": \"5F422A8C-2C4E-42C8-B420-E0728037E15C\"}, {\"vulnerable\": false, \"criteria\": \"cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*\", \"matchCriteriaId\": \"AF07A81D-12E5-4B1D-BFF9-C8D08C32FF4F\"}, {\"vulnerable\": false, \"criteria\": \"cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"A7DF96F8-BA6A-4780-9CA3-F719B3F81074\"}, {\"vulnerable\": false, \"criteria\": \"cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"DB18C4CE-5917-401E-ACF7-2747084FD36E\"}, {\"vulnerable\": false, \"criteria\": \"cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"041FF8BA-0B12-4A1F-B4BF-9C4F33B7C1E7\"}, {\"vulnerable\": false, \"criteria\": \"cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"DB79EE26-FC32-417D-A49C-A1A63165A968\"}, {\"vulnerable\": false, \"criteria\": \"cpe:2.3:o:microsoft:windows_server_20h2:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"84F9B6B1-4FEE-4D4B-B35F-B07822CCD669\"}]}]}, {\"nodes\": [{\"operator\": \"OR\", \"negate\": false, \"cpeMatch\": [{\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:microsoft:security_essentials:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"20FBA682-B703-4590-98E4-8897EED11DE0\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:microsoft:system_center_endpoint_protection:-:*:*:*:*:*:*:*\", \"matchCriteriaId\": \"194DE421-9536-4001-9A27-6C88805421EA\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:microsoft:system_center_endpoint_protection:2012:-:*:*:*:*:*:*\", \"matchCriteriaId\": \"410C8132-8953-4A2E-AF04-BBB4044BA64C\"}, {\"vulnerable\": true, \"criteria\": \"cpe:2.3:a:microsoft:system_center_endpoint_protection:2012:r2:*:*:*:*:*:*\", \"matchCriteriaId\": \"D2D1AAB8-A55D-404A-A431-7F4A0201F488\"}]}]}]",
      "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": "2024-11-21T05:44:48.307",
      "metrics": "{\"cvssMetricV31\": [{\"source\": \"secure@microsoft.com\", \"type\": \"Secondary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"baseScore\": 7.8, \"baseSeverity\": \"HIGH\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"HIGH\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 1.8, \"impactScore\": 5.9}, {\"source\": \"nvd@nist.gov\", \"type\": \"Secondary\", \"cvssData\": {\"version\": \"3.1\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\", \"baseScore\": 7.8, \"baseSeverity\": \"HIGH\", \"attackVector\": \"LOCAL\", \"attackComplexity\": \"LOW\", \"privilegesRequired\": \"LOW\", \"userInteraction\": \"NONE\", \"scope\": \"UNCHANGED\", \"confidentialityImpact\": \"HIGH\", \"integrityImpact\": \"HIGH\", \"availabilityImpact\": \"HIGH\"}, \"exploitabilityScore\": 1.8, \"impactScore\": 5.9}], \"cvssMetricV2\": [{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"cvssData\": {\"version\": \"2.0\", \"vectorString\": \"AV:L/AC:L/Au:N/C:C/I:C/A:C\", \"baseScore\": 7.2, \"accessVector\": \"LOCAL\", \"accessComplexity\": \"LOW\", \"authentication\": \"NONE\", \"confidentialityImpact\": \"COMPLETE\", \"integrityImpact\": \"COMPLETE\", \"availabilityImpact\": \"COMPLETE\"}, \"baseSeverity\": \"HIGH\", \"exploitabilityScore\": 3.9, \"impactScore\": 10.0, \"acInsufInfo\": false, \"obtainAllPrivilege\": false, \"obtainUserPrivilege\": false, \"obtainOtherPrivilege\": false, \"userInteractionRequired\": false}]}",
      "published": "2021-01-12T20:15:30.727",
      "references": "[{\"url\": \"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-1647\", \"source\": \"secure@microsoft.com\", \"tags\": [\"Patch\", \"Vendor Advisory\"]}, {\"url\": \"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-1647\", \"source\": \"af854a3a-2127-422b-91ae-364da2661108\"}]",
      "sourceIdentifier": "secure@microsoft.com",
      "vulnStatus": "Modified",
      "weaknesses": "[{\"source\": \"nvd@nist.gov\", \"type\": \"Primary\", \"description\": [{\"lang\": \"en\", \"value\": \"NVD-CWE-noinfo\"}]}]"
    },
    "nvd": "{\"cve\":{\"id\":\"CVE-2021-1647\",\"sourceIdentifier\":\"secure@microsoft.com\",\"published\":\"2021-01-12T20:15:30.727\",\"lastModified\":\"2025-10-30T19:56:27.730\",\"vulnStatus\":\"Analyzed\",\"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\"}],\"metrics\":{\"cvssMetricV31\":[{\"source\":\"secure@microsoft.com\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9},{\"source\":\"nvd@nist.gov\",\"type\":\"Secondary\",\"cvssData\":{\"version\":\"3.1\",\"vectorString\":\"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H\",\"baseScore\":7.8,\"baseSeverity\":\"HIGH\",\"attackVector\":\"LOCAL\",\"attackComplexity\":\"LOW\",\"privilegesRequired\":\"LOW\",\"userInteraction\":\"NONE\",\"scope\":\"UNCHANGED\",\"confidentialityImpact\":\"HIGH\",\"integrityImpact\":\"HIGH\",\"availabilityImpact\":\"HIGH\"},\"exploitabilityScore\":1.8,\"impactScore\":5.9}],\"cvssMetricV2\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"cvssData\":{\"version\":\"2.0\",\"vectorString\":\"AV:L/AC:L/Au:N/C:C/I:C/A:C\",\"baseScore\":7.2,\"accessVector\":\"LOCAL\",\"accessComplexity\":\"LOW\",\"authentication\":\"NONE\",\"confidentialityImpact\":\"COMPLETE\",\"integrityImpact\":\"COMPLETE\",\"availabilityImpact\":\"COMPLETE\"},\"baseSeverity\":\"HIGH\",\"exploitabilityScore\":3.9,\"impactScore\":10.0,\"acInsufInfo\":false,\"obtainAllPrivilege\":false,\"obtainUserPrivilege\":false,\"obtainOtherPrivilege\":false,\"userInteractionRequired\":false}]},\"cisaExploitAdd\":\"2021-11-03\",\"cisaActionDue\":\"2021-11-17\",\"cisaRequiredAction\":\"Apply updates per vendor instructions.\",\"cisaVulnerabilityName\":\"Microsoft Defender Remote Code Execution Vulnerability\",\"weaknesses\":[{\"source\":\"nvd@nist.gov\",\"type\":\"Primary\",\"description\":[{\"lang\":\"en\",\"value\":\"NVD-CWE-noinfo\"}]}],\"configurations\":[{\"operator\":\"AND\",\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:microsoft:windows_defender:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"794244D1-F317-44C8-8338-3DA74E71D4B0\"}]},{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":false,\"criteria\":\"cpe:2.3:o:microsoft:windows_10_1507:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"542DAEEC-73CC-46C6-A630-BF474A3446AC\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:o:microsoft:windows_10_1607:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"61019899-D7AF-46E4-A72C-D189180F66AB\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:o:microsoft:windows_10_1803:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"00345596-E9E0-4096-8DC6-0212F4747A13\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:o:microsoft:windows_10_1809:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"2E332666-2E03-468E-BC30-299816D6E8ED\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:o:microsoft:windows_10_1909:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"A1B570A8-ED1A-46B6-B8AB-064445F8FC4C\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:o:microsoft:windows_10_2004:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"D4DBE5B2-AE10-4251-BCDA-DC5EDEE6EE67\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:o:microsoft:windows_10_20h2:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"6AFD13A6-A390-4400-9029-2F4058CA17E2\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:o:microsoft:windows_7:-:sp1:*:*:*:*:*:*\",\"matchCriteriaId\":\"C2B1C231-DE19-4B8F-A4AA-5B3A65276E46\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:o:microsoft:windows_8.1:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"E93068DB-549B-45AB-8E5C-00EB5D8B5CF8\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:o:microsoft:windows_rt_8.1:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"C6CE5198-C498-4672-AF4C-77AB4BE06C5C\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:o:microsoft:windows_server_1909:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"ADE7E7B1-64AC-4986-A50B-0918A42C05BB\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:o:microsoft:windows_server_2004:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"62224791-644C-4D1F-AD77-56B16CF27630\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:o:microsoft:windows_server_2008:-:sp2:*:*:*:*:*:*\",\"matchCriteriaId\":\"5F422A8C-2C4E-42C8-B420-E0728037E15C\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:o:microsoft:windows_server_2008:r2:sp1:*:*:*:*:x64:*\",\"matchCriteriaId\":\"AF07A81D-12E5-4B1D-BFF9-C8D08C32FF4F\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:o:microsoft:windows_server_2012:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"A7DF96F8-BA6A-4780-9CA3-F719B3F81074\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:o:microsoft:windows_server_2012:r2:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"DB18C4CE-5917-401E-ACF7-2747084FD36E\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:o:microsoft:windows_server_2016:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"041FF8BA-0B12-4A1F-B4BF-9C4F33B7C1E7\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:o:microsoft:windows_server_2019:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"DB79EE26-FC32-417D-A49C-A1A63165A968\"},{\"vulnerable\":false,\"criteria\":\"cpe:2.3:o:microsoft:windows_server_20h2:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"84F9B6B1-4FEE-4D4B-B35F-B07822CCD669\"}]}]},{\"nodes\":[{\"operator\":\"OR\",\"negate\":false,\"cpeMatch\":[{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:microsoft:security_essentials:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"20FBA682-B703-4590-98E4-8897EED11DE0\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:microsoft:system_center_endpoint_protection:-:*:*:*:*:*:*:*\",\"matchCriteriaId\":\"194DE421-9536-4001-9A27-6C88805421EA\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:microsoft:system_center_endpoint_protection:2012:-:*:*:*:*:*:*\",\"matchCriteriaId\":\"410C8132-8953-4A2E-AF04-BBB4044BA64C\"},{\"vulnerable\":true,\"criteria\":\"cpe:2.3:a:microsoft:system_center_endpoint_protection:2012:r2:*:*:*:*:*:*\",\"matchCriteriaId\":\"D2D1AAB8-A55D-404A-A431-7F4A0201F488\"}]}]}],\"references\":[{\"url\":\"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-1647\",\"source\":\"secure@microsoft.com\",\"tags\":[\"Patch\",\"Vendor Advisory\"]},{\"url\":\"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-1647\",\"source\":\"af854a3a-2127-422b-91ae-364da2661108\",\"tags\":[\"Patch\",\"Vendor Advisory\"]},{\"url\":\"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-1647\",\"source\":\"134c704f-9b21-4f2e-91b3-4a467353bcc0\",\"tags\":[\"US Government Resource\"]}]}}",
    "vulnrichment": {
      "containers": "{\"adp\": [{\"title\": \"CVE Program Container\", \"references\": [{\"url\": \"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-1647\", \"tags\": [\"x_refsource_MISC\", \"x_transferred\"]}], \"providerMetadata\": {\"orgId\": \"af854a3a-2127-422b-91ae-364da2661108\", \"shortName\": \"CVE\", \"dateUpdated\": \"2024-08-03T16:18:11.008Z\"}}, {\"title\": \"CISA ADP Vulnrichment\", \"metrics\": [{\"other\": {\"type\": \"ssvc\", \"content\": {\"id\": \"CVE-2021-1647\", \"role\": \"CISA Coordinator\", \"options\": [{\"Exploitation\": \"active\"}, {\"Automatable\": \"no\"}, {\"Technical Impact\": \"total\"}], \"version\": \"2.0.3\", \"timestamp\": \"2024-01-24T15:56:07.173473Z\"}}}, {\"other\": {\"type\": \"kev\", \"content\": {\"dateAdded\": \"2021-11-03\", \"reference\": \"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-1647\"}}}], \"timeline\": [{\"lang\": \"en\", \"time\": \"2021-11-03T00:00:00.000Z\", \"value\": \"CVE-2021-1647 added to CISA KEV\"}], \"references\": [{\"url\": \"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-1647\", \"tags\": [\"government-resource\"]}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en\", \"type\": \"CWE\", \"description\": \"CWE-noinfo Not enough information\"}]}], \"providerMetadata\": {\"orgId\": \"134c704f-9b21-4f2e-91b3-4a467353bcc0\", \"shortName\": \"CISA-ADP\", \"dateUpdated\": \"2025-02-04T19:22:35.635Z\"}}], \"cna\": {\"title\": \"Microsoft Defender Remote Code Execution Vulnerability\", \"metrics\": [{\"format\": \"CVSS\", \"cvssV3_1\": {\"version\": \"3.1\", \"baseScore\": 7.8, \"baseSeverity\": \"HIGH\", \"vectorString\": \"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C\"}, \"scenarios\": [{\"lang\": \"en-US\", \"value\": \"GENERAL\"}]}], \"affected\": [{\"cpes\": [\"cpe:2.3:a:microsoft:system_center_endpoint_protection:-:*:*:*:*:*:*:*\"], \"vendor\": \"Microsoft\", \"product\": \"Microsoft System Center Endpoint Protection\", \"versions\": [{\"status\": \"affected\", \"version\": \"N/A\"}], \"platforms\": [\"Unknown\"]}, {\"cpes\": [\"cpe:2.3:a:microsoft:system_center_endpoint_protection:2012:r2:*:*:*:*:*:*\"], \"vendor\": \"Microsoft\", \"product\": \"Microsoft System Center 2012 R2 Endpoint Protection\", \"versions\": [{\"status\": \"affected\", \"version\": \"N/A\"}], \"platforms\": [\"Unknown\"]}, {\"cpes\": [\"cpe:2.3:a:microsoft:security_essentials:-:*:*:*:*:*:*:*\"], \"vendor\": \"Microsoft\", \"product\": \"Microsoft Security Essentials\", \"versions\": [{\"status\": \"affected\", \"version\": \"N/A\"}], \"platforms\": [\"Unknown\"]}, {\"cpes\": [\"cpe:2.3:a:microsoft:system_center_endpoint_protection:2012:-:*:*:*:*:*:*\"], \"vendor\": \"Microsoft\", \"product\": \"Microsoft System Center 2012 Endpoint Protection\", \"versions\": [{\"status\": \"affected\", \"version\": \"N/A\"}], \"platforms\": [\"Unknown\"]}, {\"cpes\": [\"cpe:2.3:a:microsoft:windows_defender:-:*:*:*:*:*:*:*\"], \"vendor\": \"Microsoft\", \"product\": \"Windows Defender\", \"versions\": [{\"status\": \"affected\", \"version\": \"N/A\"}], \"platforms\": [\"Windows 10 Version 1803 for 32-bit Systems\", \"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)\"]}], \"datePublic\": \"2021-01-12T08:00:00.000Z\", \"references\": [{\"url\": \"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-1647\", \"name\": \"Microsoft Defender Remote Code Execution Vulnerability\", \"tags\": [\"vendor-advisory\"]}], \"descriptions\": [{\"lang\": \"en-US\", \"value\": \"Microsoft Defender Remote Code Execution Vulnerability\"}], \"problemTypes\": [{\"descriptions\": [{\"lang\": \"en-US\", \"type\": \"Impact\", \"description\": \"Remote Code Execution\"}]}], \"providerMetadata\": {\"orgId\": \"f38d906d-7342-40ea-92c1-6c4a2c6478c8\", \"shortName\": \"microsoft\", \"dateUpdated\": \"2024-10-08T16:17:02.566Z\"}}}",
      "cveMetadata": "{\"cveId\": \"CVE-2021-1647\", \"state\": \"PUBLISHED\", \"dateUpdated\": \"2025-10-21T23:35:30.058Z\", \"dateReserved\": \"2020-12-02T00:00:00.000Z\", \"assignerOrgId\": \"f38d906d-7342-40ea-92c1-6c4a2c6478c8\", \"datePublished\": \"2021-01-12T19:42:01.000Z\", \"assignerShortName\": \"microsoft\"}",
      "dataType": "CVE_RECORD",
      "dataVersion": "5.1"
    }
  }
}


Log in or create an account to share your comment.




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.