{
  "product": "Microsoft Exchange Server Subscription Edition RTM",
  "url": "https://patchblox.com/security/product/microsoft/microsoft-exchange-server-subscription-edition-rtm",
  "summary": "Patch Radar has 11 security fixes for Microsoft Exchange Server Subscription Edition RTM, closing 54 CVEs. The newest security fix is KB5133453, released November 10, 2026.",
  "platform": "microsoft",
  "vendor": "Microsoft",
  "supported": true,
  "fixCount": 11,
  "cveCount": 54,
  "exploitedCveCount": 0,
  "unfixedCveCount": 0,
  "fixes": [
    {
      "fix": "KB5133453",
      "url": "https://patchblox.com/security/fix/microsoft/kb5133453",
      "released": "2026-11-10T08:00:00Z",
      "fixedVersion": "",
      "priority": "Urgent",
      "cveCount": 9,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB5128895",
      "url": "https://patchblox.com/security/fix/microsoft/kb5128895",
      "released": "2026-10-13T07:00:00Z",
      "fixedVersion": "",
      "priority": "Urgent",
      "cveCount": 6,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB5129955",
      "url": "https://patchblox.com/security/fix/microsoft/kb5129955",
      "released": "2026-10-02T07:00:00Z",
      "fixedVersion": "",
      "priority": "Urgent",
      "cveCount": 1,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB5121608",
      "url": "https://patchblox.com/security/fix/microsoft/kb5121608",
      "released": "2026-09-08T07:00:00Z",
      "fixedVersion": "",
      "priority": "High",
      "cveCount": 9,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB5121573",
      "url": "https://patchblox.com/security/fix/microsoft/kb5121573",
      "released": "2026-08-11T07:00:00Z",
      "fixedVersion": "",
      "priority": "Urgent",
      "cveCount": 7,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB5103212",
      "url": "https://patchblox.com/security/fix/microsoft/kb5103212",
      "released": "2026-06-09T07:00:00Z",
      "fixedVersion": "",
      "priority": "Urgent",
      "cveCount": 11,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB5074992",
      "url": "https://patchblox.com/security/fix/microsoft/kb5074992",
      "released": "2026-02-10T08:00:00Z",
      "fixedVersion": "",
      "priority": "Routine",
      "cveCount": 1,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB5071876",
      "url": "https://patchblox.com/security/fix/microsoft/kb5071876",
      "released": "2025-12-09T14:00:00Z",
      "fixedVersion": "",
      "priority": "High",
      "cveCount": 2,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB5066366",
      "url": "https://patchblox.com/security/fix/microsoft/kb5066366",
      "released": "2025-10-14T12:00:00Z",
      "fixedVersion": "",
      "priority": "High",
      "cveCount": 3,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB5047155",
      "url": "https://patchblox.com/security/fix/microsoft/kb5047155",
      "released": "2025-08-12T12:00:00Z",
      "fixedVersion": "",
      "priority": "Urgent",
      "cveCount": 1,
      "exploitedCveCount": 0
    },
    {
      "fix": "KB5063224",
      "url": "https://patchblox.com/security/fix/microsoft/kb5063224",
      "released": "2025-08-12T12:00:00Z",
      "fixedVersion": "",
      "priority": "High",
      "cveCount": 4,
      "exploitedCveCount": 0
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-11T07:45:43Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}