{
  "schemaVersion": 1,
  "attribution": [
    {
      "source": "CISA Known Exploited Vulnerabilities",
      "url": "https://www.cisa.gov/known-exploited-vulnerabilities-catalog",
      "licence": "US government work"
    },
    {
      "source": "GitHub Advisory Database",
      "url": "https://github.com/advisories",
      "licence": "CC BY 4.0"
    },
    {
      "source": "Have I Been Pwned",
      "url": "https://haveibeenpwned.com/",
      "licence": "CC BY 4.0"
    },
    {
      "source": "CVE Program (CVE records)",
      "url": "https://www.cve.org/Legal/TermsOfUse",
      "licence": "CVE Terms of Use",
      "notice": "Copyright © 1999-2026, The MITRE Corporation. CVE is a trademark and the CVE logo is a registered trademark of The MITRE Corporation.",
      "terms": "CVE Usage: MITRE hereby grants you a perpetual, worldwide, non-exclusive, no-charge, royalty-free, irrevocable copyright license to reproduce, prepare derivative works of, publicly display, publicly perform, sublicense, and distribute Common Vulnerabilities and Exposures (CVE™). Any copy you make for such purposes is authorized provided that you reproduce MITRE's copyright designation and this license in any such copy."
    },
    {
      "source": "FIRST EPSS",
      "url": "https://www.first.org/epss/",
      "licence": "free to use; FIRST requests attribution"
    }
  ],
  "record": {
    "id": "CVE-2025-53786",
    "sourceURL": "https://www.cve.org/CVERecord?id=CVE-2025-53786",
    "idYear": 2025,
    "status": "PUBLISHED",
    "publishedAt": "2025-08-06T16:02:05.764Z",
    "updatedAt": "2026-02-26T17:49:52.527Z",
    "importedAt": "2026-10-24T01:57:39.058Z",
    "snapshot": {
      "id": "cve_2026-10-24_midnight_baseline",
      "at": "2026-10-24T00:00:00.000Z",
      "source": "https://github.com/CVEProject/cvelistV5/releases/tag/cve_2026-10-24_0100Z"
    },
    "facts": {
      "title": "Microsoft Exchange Server Hybrid Deployment Elevation of Privilege Vulnerability",
      "summary": "On April 18th 2025, Microsoft announced Exchange Server Security Changes for Hybrid Deployments and accompanying non-security Hot Fix. Microsoft made these changes in the general interest of improving the security of hybrid Exchange deployments. Following further investigation, Microsoft identified specific security implications tied to the guidance and configuration steps outlined in the April announcement. Microsoft is issuing CVE-2025-53786 to document a vulnerability that is addressed by taking the steps documented with the April 18th announcement. Microsoft strongly recommends reading the information, installing the April 2025 (or later) Hot Fix and implementing the changes in your Exchange Server and hybrid environment.",
      "affected": [
        {
          "vendor": "Microsoft",
          "product": "Microsoft Exchange Server 2016 Cumulative Update 23",
          "platforms": [
            "x64-based Systems"
          ],
          "versions": [
            {
              "version": "15.01.0.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "15.01.2507.055"
            }
          ]
        },
        {
          "vendor": "Microsoft",
          "product": "Microsoft Exchange Server 2019 Cumulative Update 14",
          "platforms": [
            "x64-based Systems"
          ],
          "versions": [
            {
              "version": "15.02.0.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "15.02.1544.025"
            }
          ]
        },
        {
          "vendor": "Microsoft",
          "product": "Microsoft Exchange Server 2019 Cumulative Update 15",
          "platforms": [
            "x64-based Systems"
          ],
          "versions": [
            {
              "version": "15.02.0.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "15.02.1748.024"
            }
          ]
        },
        {
          "vendor": "Microsoft",
          "product": "Microsoft Exchange Server Subscription Edition RTM",
          "platforms": [
            "x64-based Systems"
          ],
          "versions": [
            {
              "version": "15.02.0.0",
              "status": "affected",
              "versionType": "custom",
              "lessThan": "15.02.2562.017"
            }
          ]
        }
      ]
    }
  }
}