{
  "fix": "KB5078943",
  "url": "https://patchblox.com/security/fix/microsoft/kb5078943",
  "summary": "KB5078943, released May 12, 2026, fixes 3 CVEs across 2 products. None of them is reported as exploited. Patch Radar priority: Urgent. The product is no longer supported.",
  "platform": "microsoft",
  "type": "kb",
  "releaseKind": "Security",
  "title": "May 2026 security update",
  "released": "2026-05-12T07:00:00Z",
  "priority": "Urgent",
  "priorityTier": 2,
  "priorityReason": "Closes CVE-2026-42898, rated Critical",
  "supported": false,
  "cveCount": 3,
  "exploitedCveCount": 0,
  "kevCveCount": 0,
  "ransomwareCveCount": 0,
  "maxEpss": 0.01194,
  "maxCvss": 9.9,
  "vendorAdvisory": "https://support.microsoft.com/help/5078943",
  "appliesTo": [
    {
      "product": "Microsoft Dynamics 365 (on-premises) version 9.0",
      "productUrl": "https://patchblox.com/security/product/microsoft/microsoft-dynamics-365-on-premises-version-9.0",
      "fixedVersion": "",
      "supported": false
    },
    {
      "product": "Microsoft Dynamics 365 (on-premises) version 9.1",
      "productUrl": "https://patchblox.com/security/product/microsoft/microsoft-dynamics-365-on-premises-version-9.1",
      "fixedVersion": "",
      "supported": false
    }
  ],
  "cves": [
    {
      "cveId": "CVE-2026-42898",
      "url": "https://patchblox.com/security/cve/CVE-2026-42898",
      "title": "Microsoft Dynamics 365 On-Premises Remote Code Execution Vulnerability",
      "component": "Microsoft Dynamics 365 (on-premises)",
      "impact": "Remote Code Execution",
      "priority": "Urgent",
      "severity": "Critical",
      "cvss": 9.9,
      "epss": 0.01194,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-42833",
      "url": "https://patchblox.com/security/cve/CVE-2026-42833",
      "title": "Microsoft Dynamics 365 On-Premises Remote Code Execution Vulnerability",
      "component": "Microsoft Dynamics 365 (on-premises)",
      "impact": "Remote Code Execution",
      "priority": "High",
      "severity": "Important",
      "cvss": 9.1,
      "epss": 0.00748,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    },
    {
      "cveId": "CVE-2026-33103",
      "url": "https://patchblox.com/security/cve/CVE-2026-33103",
      "title": "Microsoft Dynamics 365 (On-Premises) Information Disclosure Vulnerability",
      "component": "Microsoft Dynamics 365 (on-premises)",
      "impact": "Information Disclosure",
      "priority": "Routine",
      "severity": "Important",
      "cvss": 5.5,
      "epss": 0.00221,
      "kev": false,
      "ransomware": false,
      "exploited": false,
      "disclosed": false
    }
  ],
  "dataAsOf": "2026-11-07T06:34:28Z"
}