{
  "cveId": "CVE-2021-24099",
  "url": "https://patchblox.com/security/cve/CVE-2021-24099",
  "summary": "CVE-2021-24099 is fixed in 3 products on 1 platform, first by KB5000675, released February 9, 2021. It is not reported as exploited. Patch Radar priority: Routine.",
  "title": "Skype for Business and Lync Denial of Service Vulnerability",
  "description": "",
  "published": "2021-02-09T14:00:00Z",
  "severity": "Important",
  "cvss": 6.5,
  "epss": 0.03201,
  "epssPercentile": 0.88209,
  "priority": "Routine",
  "priorityTier": 4,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "exploitabilityAssessment": "Exploitation Less Likely",
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-24099",
  "fixes": [
    {
      "platform": "microsoft",
      "product": "Microsoft Lync Server 2013",
      "fixedVersion": "",
      "fix": "KB5000675",
      "url": "https://patchblox.com/security/fix/microsoft/kb5000675",
      "released": "2021-02-09T14:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Skype for Business Server 2015 CU 8",
      "fixedVersion": "",
      "fix": "KB5000675",
      "url": "https://patchblox.com/security/fix/microsoft/kb5000675",
      "released": "2021-02-09T14:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Skype for Business Server 2019  CU2",
      "fixedVersion": "",
      "fix": "KB5000675",
      "url": "https://patchblox.com/security/fix/microsoft/kb5000675",
      "released": "2021-02-09T14:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T13:06:02Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}