{
  "document": {
    "acknowledgments": [
      {
        "names": [
          "Anonymous"
        ]
      }
    ],
    "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-2025-29973 Microsoft Azure File Sync Elevation of Privilege Vulnerability - HTML",
        "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-29973"
      },
      {
        "category": "self",
        "summary": "CVE-2025-29973 Microsoft Azure File Sync Elevation of Privilege Vulnerability - CSAF",
        "url": "https://msrc.microsoft.com/csaf/advisories/2025/msrc_cve-2025-29973.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 Azure File Sync Elevation of Privilege Vulnerability",
    "tracking": {
      "current_release_date": "2025-05-13T07:00:00.000Z",
      "generator": {
        "date": "2025-07-15T01:10:58.449Z",
        "engine": {
          "name": "MSRC Generator",
          "version": "1.0"
        }
      },
      "id": "msrc_CVE-2025-29973",
      "initial_release_date": "2025-05-13T07:00:00.000Z",
      "revision_history": [
        {
          "date": "2025-05-13T07:00:00.000Z",
          "legacy_version": "1",
          "number": "1",
          "summary": "Information published."
        }
      ],
      "status": "final",
      "version": "1"
    }
  },
  "product_tree": {
    "branches": [
      {
        "branches": [
          {
            "category": "product_version_range",
            "name": "\u003c26100",
            "product": {
              "name": "Azure File Sync v19.0 \u003c26100",
              "product_id": "2"
            }
          },
          {
            "category": "product_version",
            "name": "26100",
            "product": {
              "name": "Azure File Sync v19.0 26100",
              "product_id": "16746"
            }
          }
        ],
        "category": "product_name",
        "name": "Azure File Sync v19.0"
      },
      {
        "branches": [
          {
            "category": "product_version_range",
            "name": "\u003c5041884",
            "product": {
              "name": "Azure File Sync v20.0 \u003c5041884",
              "product_id": "1"
            }
          },
          {
            "category": "product_version",
            "name": "5041884",
            "product": {
              "name": "Azure File Sync v20.0 5041884",
              "product_id": "16747"
            }
          }
        ],
        "category": "product_name",
        "name": "Azure File Sync v20.0"
      }
    ]
  },
  "vulnerabilities": [
    {
      "cve": "CVE-2025-29973",
      "cwe": {
        "id": "CWE-284",
        "name": "Improper Access Control"
      },
      "notes": [
        {
          "category": "general",
          "text": "Microsoft",
          "title": "Assigning CNA"
        },
        {
          "category": "faq",
          "text": "The vulnerability has been mitigated by a recent update to Azure File Sync\u0027s backend infrastructure and no Azure File Sync agent upgrade needed to the latest version.. Customers who are required to inspect and correct their Access Control List\u0027s have been notified through Azure Service Health Alerts under TrackingID: 4K2C-9_Z . See View service health notifications by using the Azure portal for information on how to view Azure Service Health Alerts in the Azure Portal.\nCustomers who have not received this Azure Service Health Alert do not need to take any action to be protected against this vulnerability.",
          "title": "What actions do customers need to take to protect themselves from this vulnerability?"
        },
        {
          "category": "faq",
          "text": "To successfully exploit this vulnerability, an attacker would need to gain elevated privileges enabling them to perform file operations in directories they would not normally be able to access or perform.",
          "title": "According to the CVSS metric, the attack complexity is high (AC:H). What does that mean for this vulnerability?"
        },
        {
          "category": "faq",
          "text": "An attacker can gain permissions to access directories in Azure File Sync servers and perform file operations they do not normally have permissions to access or perform.",
          "title": "What privileges could be gained by an attacker who successfully exploited this vulnerability?"
        }
      ],
      "product_status": {
        "fixed": [
          "16746",
          "16747"
        ],
        "known_affected": [
          "1",
          "2"
        ]
      },
      "references": [
        {
          "category": "self",
          "summary": "CVE-2025-29973 Microsoft Azure File Sync Elevation of Privilege Vulnerability - HTML",
          "url": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-29973"
        },
        {
          "category": "self",
          "summary": "CVE-2025-29973 Microsoft Azure File Sync Elevation of Privilege Vulnerability - CSAF",
          "url": "https://msrc.microsoft.com/csaf/advisories/2025/msrc_cve-2025-29973.json"
        }
      ],
      "remediations": [
        {
          "category": "vendor_fix",
          "date": "2025-05-13T07:00:00.000Z",
          "details": "26100:N/A:https://support.microsoft.com/en-us/topic/azure-file-sync-agent-v19-release-september-2024-e44fc142-8a24-4dea-9bf9-6e884b4b342e",
          "product_ids": [
            "2"
          ],
          "url": "https://support.microsoft.com/en-us/topic/azure-file-sync-agent-v19-release-september-2024-e44fc142-8a24-4dea-9bf9-6e884b4b342e"
        },
        {
          "category": "vendor_fix",
          "date": "2025-05-13T07:00:00.000Z",
          "details": "5041884:N/A:https://support.microsoft.com/en-us/topic/azure-file-sync-agent-v20-release-february-2025-b92c9c6f-8232-42d3-a3e0-e6df1fce0f5e",
          "product_ids": [
            "1"
          ],
          "url": "https://support.microsoft.com/en-us/topic/azure-file-sync-agent-v20-release-february-2025-b92c9c6f-8232-42d3-a3e0-e6df1fce0f5e"
        }
      ],
      "scores": [
        {
          "cvss_v3": {
            "attackComplexity": "HIGH",
            "attackVector": "LOCAL",
            "availabilityImpact": "HIGH",
            "baseScore": 7.0,
            "baseSeverity": "HIGH",
            "confidentialityImpact": "HIGH",
            "environmentalsScore": 0.0,
            "exploitCodeMaturity": "UNPROVEN",
            "integrityImpact": "HIGH",
            "privilegesRequired": "LOW",
            "remediationLevel": "OFFICIAL_FIX",
            "reportConfidence": "CONFIRMED",
            "scope": "UNCHANGED",
            "temporalScore": 6.1,
            "userInteraction": "NONE",
            "vectorString": "CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C",
            "version": "3.1"
          },
          "products": [
            "1",
            "2"
          ]
        }
      ],
      "threats": [
        {
          "category": "impact",
          "details": "Elevation of Privilege"
        },
        {
          "category": "exploit_status",
          "details": "Publicly Disclosed:No;Exploited:No;Latest Software Release:Exploitation Unlikely"
        }
      ],
      "title": "Microsoft Azure File Sync Elevation of Privilege Vulnerability"
    }
  ]
}