{
  "document": {
    "acknowledgments": [
      {
        "names": [
          "Anonymous working with Trend Micro Zero Day Initiative"
        ]
      }
    ],
    "aggregate_severity": {
      "namespace": "https://www.microsoft.com/en-us/msrc/security-update-severity-rating-system",
      "text": "Important"
    },
    "category": "csaf_security_advisory",
    "csaf_version": "2.0",
    "distribution": {
      "text": "Public",
      "tlp": {
        "label": "WHITE",
        "url": "https://www.first.org/tlp/"
      }
    },
    "lang": "en-US",
    "notes": [
      {
        "category": "general",
        "text": "To determine the support lifecycle for your software, see the Microsoft Support Lifecycle: https://support.microsoft.com/lifecycle",
        "title": "Additional Resources"
      },
      {
        "category": "legal_disclaimer",
        "text": "The information provided in the Microsoft Knowledge Base is provided \\\"as is\\\" without warranty of any kind. Microsoft disclaims all warranties, either express or implied, including the warranties of merchantability and fitness for a particular purpose. In no event shall Microsoft Corporation or its suppliers be liable for any damages whatsoever including direct, indirect, incidental, consequential, loss of business profits or special damages, even if Microsoft Corporation or its suppliers have been advised of the possibility of such damages. Some states do not allow the exclusion or limitation of liability for consequential or incidental damages so the foregoing limitation may not apply.",
        "title": "Disclaimer"
      },
      {
        "category": "general",
        "text": "Required. The vulnerability documented by this CVE requires customer action to resolve.",
        "title": "Customer Action"
      }
    ],
    "publisher": {
      "category": "vendor",
      "contact_details": "secure@microsoft.com",
      "name": "Microsoft Security Response Center",
      "namespace": "https://msrc.microsoft.com"
    },
    "references": [
      {
        "category": "self",
        "summary": "CVE-2021-27076 Microsoft SharePoint Server Remote Code Execution Vulnerability - HTML",
        "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-27076"
      },
      {
        "category": "self",
        "summary": "CVE-2021-27076 Microsoft SharePoint Server Remote Code Execution Vulnerability - CSAF",
        "url": "https://msrc.microsoft.com/csaf/advisories/2021/msrc_cve-2021-27076.json"
      },
      {
        "category": "external",
        "summary": "Microsoft Exploitability Index",
        "url": "https://www.microsoft.com/en-us/msrc/exploitability-index?rtc=1"
      },
      {
        "category": "external",
        "summary": "Microsoft Support Lifecycle",
        "url": "https://support.microsoft.com/lifecycle"
      },
      {
        "category": "external",
        "summary": "Common Vulnerability Scoring System",
        "url": "https://www.first.org/cvss"
      }
    ],
    "title": "Microsoft SharePoint Server Remote Code Execution Vulnerability",
    "tracking": {
      "current_release_date": "2021-03-09T08:00:00.000Z",
      "generator": {
        "date": "2026-08-19T16:30:03.230Z",
        "engine": {
          "name": "MSRC Generator",
          "version": "1.0"
        }
      },
      "id": "msrc_CVE-2021-27076",
      "initial_release_date": "2021-03-09T08:00:00.000Z",
      "revision_history": [
        {
          "date": "2021-03-09T08:00:00.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_version_range",
            "name": "<16.0.5134.1000",
            "product": {
              "name": "Microsoft SharePoint Enterprise Server 2016 <16.0.5134.1000",
              "product_id": "2"
            }
          },
          {
            "category": "product_version",
            "name": "16.0.5134.1000",
            "product": {
              "name": "Microsoft SharePoint Enterprise Server 2016 16.0.5134.1000",
              "product_id": "10950"
            }
          }
        ],
        "category": "product_name",
        "name": "Microsoft SharePoint Enterprise Server 2016"
      },
      {
        "branches": [
          {
            "category": "product_version_range",
            "name": "<16.0.10372.20000",
            "product": {
              "name": "Microsoft SharePoint Server 2019 <16.0.10372.20000",
              "product_id": "1"
            }
          },
          {
            "category": "product_version",
            "name": "16.0.10372.20000",
            "product": {
              "name": "Microsoft SharePoint Server 2019 16.0.10372.20000",
              "product_id": "11585"
            }
          }
        ],
        "category": "product_name",
        "name": "Microsoft SharePoint Server 2019"
      },
      {
        "branches": [
          {
            "category": "product_version_range",
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            "product": {
              "name": "Microsoft Business Productivity Servers 2010 Service Pack 2 <14.0.7267.5000",
              "product_id": "4"
            }
          },
          {
            "category": "product_version",
            "name": "14.0.7267.5000",
            "product": {
              "name": "Microsoft Business Productivity Servers 2010 Service Pack 2 14.0.7267.5000",
              "product_id": "10545"
            }
          }
        ],
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        "name": "Microsoft Business Productivity Servers 2010 Service Pack 2"
      },
      {
        "branches": [
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            "name": "<15.0.5327.1000",
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              "product_id": "3"
            }
          },
          {
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            "name": "15.0.5327.1000",
            "product": {
              "name": "Microsoft SharePoint Foundation 2013 Service Pack 1 15.0.5327.1000",
              "product_id": "10612"
            }
          }
        ],
        "category": "product_name",
        "name": "Microsoft SharePoint Foundation 2013 Service Pack 1"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2021-27076",
      "notes": [
        {
          "category": "general",
          "text": "Microsoft",
          "title": "Assigning CNA"
        },
        {
          "category": "faq",
          "text": "In a network-based attack an attacker could gain access to create a site and could execute code remotely. The attacker would need to have privileges.",
          "title": "How could an attacker exploit this vulnerability?"
        }
      ],
      "product_status": {
        "fixed": [
          "10545",
          "10612",
          "10950",
          "11585"
        ],
        "known_affected": [
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          "2",
          "3",
          "4"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2021-27076 Microsoft SharePoint Server Remote Code Execution Vulnerability - HTML",
          "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-27076"
        },
        {
          "category": "self",
          "summary": "CVE-2021-27076 Microsoft SharePoint Server Remote Code Execution Vulnerability - CSAF",
          "url": "https://msrc.microsoft.com/csaf/advisories/2021/msrc_cve-2021-27076.json"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2021-03-09T08:00:00.000Z",
          "details": "16.0.5134.1000:Security Update:https://support.microsoft.com/kb/4493232",
          "product_ids": [
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          ],
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        },
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          "details": "16.0.10372.20000:Security Update:https://support.microsoft.com/kb/4493230",
          "product_ids": [
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          ],
          "url": "https://support.microsoft.com/kb/4493230"
        },
        {
          "category": "vendor_fix",
          "date": "2021-03-09T08:00:00.000Z",
          "details": "14.0.7267.5000:Security Update:https://support.microsoft.com/help/3101541",
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          ],
          "url": "https://support.microsoft.com/help/3101541"
        },
        {
          "category": "vendor_fix",
          "date": "2021-03-09T08:00:00.000Z",
          "details": "15.0.5327.1000:Security Update:https://support.microsoft.com/kb/4493238",
          "product_ids": [
            "3"
          ],
          "url": "https://support.microsoft.com/kb/4493238"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.8,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "environmentalScore": 0.0,
            "exploitCodeMaturity": "UNPROVEN",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "remediationLevel": "OFFICIAL_FIX",
            "reportConfidence": "CONFIRMED",
            "scope": "UNCHANGED",
            "temporalScore": 7.7,
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "1",
            "2",
            "3",
            "4"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Remote Code Execution"
        },
        {
          "category": "exploit_status",
          "details": "Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation More Likely;Older Software Release:Exploitation More Likely"
        }
      ],
      "title": "Microsoft SharePoint Server Remote Code Execution Vulnerability"
    }
  ]
}