{
  "document": {
    "acknowledgments": [
      {
        "names": [
          "Anonymous"
        ]
      },
      {
        "names": [
          "Anonymous"
        ]
      },
      {
        "names": [
          "Viettel Cyber Security with Trend Zero Day Initiative\n "
        ]
      }
    ],
    "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-2025-53771 Microsoft SharePoint Server Spoofing Vulnerability - HTML",
        "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53771"
      },
      {
        "category": "self",
        "summary": "CVE-2025-53771 Microsoft SharePoint Server Spoofing Vulnerability - CSAF",
        "url": "https://msrc.microsoft.com/csaf/advisories/2025/msrc_cve-2025-53771.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 Spoofing Vulnerability",
    "tracking": {
      "current_release_date": "2025-07-31T07:00:00.000Z",
      "generator": {
        "date": "2025-08-18T17:50:23.474Z",
        "engine": {
          "name": "MSRC Generator",
          "version": "1.0"
        }
      },
      "id": "msrc_CVE-2025-53771",
      "initial_release_date": "2025-07-08T07:00:00.000Z",
      "revision_history": [
        {
          "date": "2025-07-20T07:00:00.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
        },
        {
          "date": "2025-07-20T07:00:00.000Z",
          "legacy_version": "2",
          "number": "2",
          "summary": "The security update is available for Microsoft SharePoint Server 2019. Microsoft strongly encourages customers running this version of SharePoint to install this update as soon as possible."
        },
        {
          "date": "2025-07-21T07:00:00.000Z",
          "legacy_version": "3",
          "number": "3",
          "summary": "The security update is available for Microsoft SharePoint Server Subscription Edition.  Microsoft strongly encourages customers running this version of SharePoint to install this update as soon as possible."
        },
        {
          "date": "2025-07-21T07:00:00.000Z",
          "legacy_version": "3.1",
          "number": "4",
          "summary": "Added an FAQ and updated the CVSS score. This is an informational change only."
        },
        {
          "date": "2025-07-21T07:00:00.000Z",
          "legacy_version": "3.2",
          "number": "5",
          "summary": "Added an acknowledgement. This is an informational change only."
        },
        {
          "date": "2025-07-22T07:00:00.000Z",
          "legacy_version": "3.3",
          "number": "6",
          "summary": "Updated one or more CVSS scores for the affected products. This is an informational change only."
        },
        {
          "date": "2025-07-22T07:00:00.000Z",
          "legacy_version": "3.4",
          "number": "7",
          "summary": "Updated CWE value.  This is an informational change only."
        },
        {
          "date": "2025-07-24T07:00:00.000Z",
          "legacy_version": "3.4",
          "number": "8",
          "summary": "Corrected the Download and Article links in the Security Updates table. This is an informational change only."
        },
        {
          "date": "2025-07-31T07:00:00.000Z",
          "legacy_version": "3.5",
          "number": "9",
          "summary": "Updated the executive summary with current information.  This is an informational change only."
        },
        {
          "date": "2025-07-31T07:00:00.000Z",
          "legacy_version": "3.6",
          "number": "10",
          "summary": "Added an FAQ to explain that the security update KB for SharePoint Server 2016 applies to both Microsoft SharePoint Server 2016 and Microsoft SharePoint Enterprise Server 2016. This is an informational change only."
        }
      ],
      "status": "final",
      "version": "9"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_version_range",
            "name": "\u003c16.0.5513.1001",
            "product": {
              "name": "Microsoft SharePoint Enterprise Server 2016 \u003c16.0.5513.1001",
              "product_id": "3"
            }
          },
          {
            "category": "product_version",
            "name": "16.0.5513.1001",
            "product": {
              "name": "Microsoft SharePoint Enterprise Server 2016 16.0.5513.1001",
              "product_id": "10950"
            }
          }
        ],
        "category": "product_name",
        "name": "Microsoft SharePoint Enterprise Server 2016"
      },
      {
        "branches": [
          {
            "category": "product_version_range",
            "name": "\u003c16.0.10417.20037",
            "product": {
              "name": "Microsoft SharePoint Server 2019 \u003c16.0.10417.20037",
              "product_id": "2"
            }
          },
          {
            "category": "product_version",
            "name": "16.0.10417.20037",
            "product": {
              "name": "Microsoft SharePoint Server 2019 16.0.10417.20037",
              "product_id": "11585"
            }
          }
        ],
        "category": "product_name",
        "name": "Microsoft SharePoint Server 2019"
      },
      {
        "branches": [
          {
            "category": "product_version_range",
            "name": "\u003c16.0.18526.20508",
            "product": {
              "name": "Microsoft SharePoint Server Subscription Edition \u003c16.0.18526.20508",
              "product_id": "1"
            }
          },
          {
            "category": "product_version",
            "name": "16.0.18526.20508",
            "product": {
              "name": "Microsoft SharePoint Server Subscription Edition 16.0.18526.20508",
              "product_id": "11961"
            }
          }
        ],
        "category": "product_name",
        "name": "Microsoft SharePoint Server Subscription Edition"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2025-53771",
      "cwe": {
        "id": "CWE-287",
        "name": "Improper Authentication"
      },
      "notes": [
        {
          "category": "general",
          "text": "Microsoft",
          "title": "Assigning CNA"
        },
        {
          "category": "faq",
          "text": "Yes, the update for  CVE-2025-53770 includes more robust protections than the update for CVE-2025-49704.  The update for CVE-2025-53771 includes more robust protections than the update for CVE-2025-49706.",
          "title": "Are the two new CVEs that were released related to the two SharePoint vulnerabilities that were documented by CVE-2025-49704 and CVE-2025-49706?"
        },
        {
          "category": "faq",
          "text": "Yes. Customers should apply all updates offered for the software installed on their systems. If multiple updates apply, they can be installed in any order.",
          "title": "There are multiple update packages available for some of the affected software. Do I need to install all the updates listed in the Security Updates table for the software?"
        },
        {
          "category": "faq",
          "text": "Yes. The same KB number applies to both SharePoint Server 2016 and SharePoint Enterprise Server 2016. Customers running either version should install the security update to be protected from this vulnerability.",
          "title": "I am running SharePoint Server 2016. Do the updates for SharePoint Enterprise Server 2016 also apply to the version I am running?"
        }
      ],
      "product_status": {
        "fixed": [
          "10950",
          "11585",
          "11961"
        ],
        "known_affected": [
          "1",
          "2",
          "3"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2025-53771 Microsoft SharePoint Server Spoofing Vulnerability - HTML",
          "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53771"
        },
        {
          "category": "self",
          "summary": "CVE-2025-53771 Microsoft SharePoint Server Spoofing Vulnerability - CSAF",
          "url": "https://msrc.microsoft.com/csaf/advisories/2025/msrc_cve-2025-53771.json"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2025-07-20T07:00:00.000Z",
          "details": "16.0.5513.1001:Security Update:https://support.microsoft.com/help/5002760",
          "product_ids": [
            "3"
          ],
          "url": "https://support.microsoft.com/help/5002760"
        },
        {
          "category": "vendor_fix",
          "date": "2025-07-20T07:00:00.000Z",
          "details": "16.0.5513.1001:Security Update:https://support.microsoft.com/help/5002759",
          "product_ids": [
            "3"
          ],
          "url": "https://support.microsoft.com/help/5002759"
        },
        {
          "category": "vendor_fix",
          "date": "2025-07-20T07:00:00.000Z",
          "details": "16.0.10417.20037:Security Update:https://www.microsoft.com/en-us/download/details.aspx?id=108286",
          "product_ids": [
            "2"
          ],
          "url": "https://www.microsoft.com/en-us/download/details.aspx?id=108286"
        },
        {
          "category": "vendor_fix",
          "date": "2025-07-20T07:00:00.000Z",
          "details": "16.0.10417.20037:Security Update:https://support.microsoft.com/help/5002753",
          "product_ids": [
            "2"
          ],
          "url": "https://support.microsoft.com/help/5002753"
        },
        {
          "category": "vendor_fix",
          "date": "2025-07-20T07:00:00.000Z",
          "details": "16.0.18526.20508:Security Update:https://www.microsoft.com/en-us/download/details.aspx?id=108285",
          "product_ids": [
            "1"
          ],
          "url": "https://www.microsoft.com/en-us/download/details.aspx?id=108285"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "LOW",
            "attackVector": "NETWORK",
            "availabilityImpact": "NONE",
            "baseScore": 6.5,
            "baseSeverity": "MEDIUM",
            "confidentialityImpact": "LOW",
            "environmentalsScore": 0.0,
            "exploitCodeMaturity": "PROOF_OF_CONCEPT",
            "integrityImpact": "LOW",
            "privilegesRequired": "NONE",
            "remediationLevel": "OFFICIAL_FIX",
            "reportConfidence": "CONFIRMED",
            "scope": "UNCHANGED",
            "temporalScore": 5.9,
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:L/A:N/E:P/RL:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "1",
            "2",
            "3"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Spoofing"
        },
        {
          "category": "exploit_status",
          "details": "Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Less Likely"
        }
      ],
      "title": "Microsoft SharePoint Server Spoofing Vulnerability"
    }
  ]
}