{
  "document": {
    "acknowledgments": [
      {
        "names": [
          "cjm00n with Cyber Kunlun \u0026amp; Zhiniang Peng"
        ]
      }
    ],
    "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-2025-21400 Microsoft SharePoint Server Remote Code Execution Vulnerability - HTML",
        "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21400"
      },
      {
        "category": "self",
        "summary": "CVE-2025-21400 Microsoft SharePoint Server Remote Code Execution Vulnerability - CSAF",
        "url": "https://msrc.microsoft.com/csaf/advisories/2025/msrc_cve-2025-21400.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": "2025-02-11T08:00:00.000Z",
      "generator": {
        "date": "2025-03-19T17:45:57.629Z",
        "engine": {
          "name": "MSRC Generator",
          "version": "1.0"
        }
      },
      "id": "msrc_CVE-2025-21400",
      "initial_release_date": "2025-02-11T08:00:00.000Z",
      "revision_history": [
        {
          "date": "2025-02-11T08:00:00.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_version_range",
            "name": "\u003c16.0.5487.1000",
            "product": {
              "name": "Microsoft SharePoint Enterprise Server 2016 \u003c16.0.5487.1000",
              "product_id": "3"
            }
          },
          {
            "category": "product_version",
            "name": "16.0.5487.1000",
            "product": {
              "name": "Microsoft SharePoint Enterprise Server 2016 16.0.5487.1000",
              "product_id": "10950"
            }
          }
        ],
        "category": "product_name",
        "name": "Microsoft SharePoint Enterprise Server 2016"
      },
      {
        "branches": [
          {
            "category": "product_version_range",
            "name": "\u003c16.0.10416.20050",
            "product": {
              "name": "Microsoft SharePoint Server 2019 \u003c16.0.10416.20050",
              "product_id": "2"
            }
          },
          {
            "category": "product_version",
            "name": "16.0.10416.20050",
            "product": {
              "name": "Microsoft SharePoint Server 2019 16.0.10416.20050",
              "product_id": "11585"
            }
          }
        ],
        "category": "product_name",
        "name": "Microsoft SharePoint Server 2019"
      },
      {
        "branches": [
          {
            "category": "product_version_range",
            "name": "\u003c16.0.17928.20396",
            "product": {
              "name": "Microsoft SharePoint Server Subscription Edition \u003c16.0.17928.20396",
              "product_id": "1"
            }
          },
          {
            "category": "product_version",
            "name": "16.0.17928.20396",
            "product": {
              "name": "Microsoft SharePoint Server Subscription Edition 16.0.17928.20396",
              "product_id": "11961"
            }
          }
        ],
        "category": "product_name",
        "name": "Microsoft SharePoint Server Subscription Edition"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2025-21400",
      "cwe": {
        "id": "CWE-285",
        "name": "Improper Authorization"
      },
      "notes": [
        {
          "category": "general",
          "text": "Microsoft",
          "title": "Assigning CNA"
        },
        {
          "category": "faq",
          "text": "This attack requires a client to connect to a malicious server, and that could allow the attacker to gain code execution on the client.",
          "title": "According to the CVSS metric, the attack vector is network (AV:N) and the user interaction is required (UI:R). What is the target context of the remote code execution?"
        },
        {
          "category": "faq",
          "text": "In a network-based attack, an authenticated attacker, as at least a Site Owner, could write arbitrary code to inject and execute code remotely on the SharePoint Server.",
          "title": "How could an attacker exploit the vulnerability?"
        }
      ],
      "product_status": {
        "fixed": [
          "10950",
          "11585",
          "11961"
        ],
        "known_affected": [
          "1",
          "2",
          "3"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2025-21400 Microsoft SharePoint Server Remote Code Execution Vulnerability - HTML",
          "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21400"
        },
        {
          "category": "self",
          "summary": "CVE-2025-21400 Microsoft SharePoint Server Remote Code Execution Vulnerability - CSAF",
          "url": "https://msrc.microsoft.com/csaf/advisories/2025/msrc_cve-2025-21400.json"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2025-02-11T08:00:00.000Z",
          "details": "16.0.5487.1000:Security Update:https://support.microsoft.com/help/5002685",
          "product_ids": [
            "3"
          ],
          "url": "https://support.microsoft.com/help/5002685"
        },
        {
          "category": "vendor_fix",
          "date": "2025-02-11T08:00:00.000Z",
          "details": "16.0.10416.20050:Security Update:https://support.microsoft.com/help/5002678",
          "product_ids": [
            "2"
          ],
          "url": "https://support.microsoft.com/help/5002678"
        },
        {
          "category": "vendor_fix",
          "date": "2025-02-11T08:00:00.000Z",
          "details": "16.0.17928.20396:Security Update:https://support.microsoft.com/help/5002681",
          "product_ids": [
            "1"
          ],
          "url": "https://support.microsoft.com/help/5002681"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "HIGH",
            "baseScore": 8.0,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "environmentalsScore": 0.0,
            "exploitCodeMaturity": "UNPROVEN",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "remediationLevel": "OFFICIAL_FIX",
            "reportConfidence": "CONFIRMED",
            "scope": "UNCHANGED",
            "temporalScore": 7.0,
            "userInteraction": "REQUIRED",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:L/UI:R/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "1",
            "2",
            "3"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Remote Code Execution"
        },
        {
          "category": "exploit_status",
          "details": "Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation More Likely"
        }
      ],
      "title": "Microsoft SharePoint Server Remote Code Execution Vulnerability"
    }
  ]
}