{
  "cveId": "CVE-2025-53770",
  "url": "https://patchblox.com/security/cve/CVE-2025-53770",
  "summary": "CVE-2025-53770 is fixed in 3 products on 1 platform, first by KB5002760, released July 20, 2025. It is being exploited: CISA added it to the Known Exploited Vulnerabilities catalog on July 20, 2025, with known ransomware use. Patch Radar priority: Patch now.",
  "title": "Microsoft SharePoint Server Remote Code Execution Vulnerability",
  "description": "\u003Cp\u003EDeserialization of untrusted data in on-premises Microsoft SharePoint Server allows an unauthorized attacker to execute code over a network.\u003C/p\u003E\n\u003Cp\u003EMicrosoft is aware that an exploit for CVE-2025-53770 exists in the wild.\u003C/p\u003E\n\u003Cp\u003EMicrosoft is preparing and fully testing a comprehensive update to address this vulnerability.  In the meantime, please make sure that the mitigation provided in this CVE documentation is in place so that you are protected from exploitation.\u003C/p\u003E",
  "published": "2025-07-19T12:00:00Z",
  "severity": "Critical",
  "cvss": 9.8,
  "cwe": "Deserialization of Untrusted Data",
  "epss": 0.99999,
  "epssPercentile": 0.99991,
  "priority": "Patch now",
  "priorityTier": 1,
  "exploited": true,
  "vendorExploited": true,
  "disclosed": false,
  "exploitabilityAssessment": "Exploitation Detected",
  "kev": {
    "added": "2025-07-20T00:00:00Z",
    "due": "2025-07-21T00:00:00Z",
    "ransomware": true,
    "requiredAction": "Disconnect public-facing versions of SharePoint Server that have reached their end-of-life (EOL) or end-of-service (EOS) to include SharePoint Server 2013 and earlier versions. For supported versions, please follow the mitigations according to CISA (URL listed below in Notes) and vendor instructions (URL listed below in Notes). Adhere to the applicable BOD 22-01 guidance for cloud services or discontinue use of the product if mitigations are not available."
  },
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-53770",
  "fixes": [
    {
      "platform": "microsoft",
      "product": "Microsoft SharePoint Enterprise Server 2016",
      "fixedVersion": "",
      "fix": "KB5002760",
      "url": "https://patchblox.com/security/fix/microsoft/kb5002760",
      "released": "2025-07-20T12:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Microsoft SharePoint Enterprise Server 2016",
      "fixedVersion": "",
      "fix": "KB5002759",
      "url": "https://patchblox.com/security/fix/microsoft/kb5002759",
      "released": "2025-07-20T12:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Microsoft SharePoint Server 2019",
      "fixedVersion": "",
      "fix": "KB5002753",
      "url": "https://patchblox.com/security/fix/microsoft/kb5002753",
      "released": "2025-07-20T12:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Microsoft SharePoint Server 2019",
      "fixedVersion": "",
      "fix": "KB5002754",
      "url": "https://patchblox.com/security/fix/microsoft/kb5002754",
      "released": "2025-07-20T12:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Microsoft SharePoint Server Subscription Edition",
      "fixedVersion": "",
      "fix": "KB5002768",
      "url": "https://patchblox.com/security/fix/microsoft/kb5002768",
      "released": "2025-07-20T12:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T19:12:23Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}