{
  "cveId": "CVE-2021-26419",
  "url": "https://patchblox.com/security/cve/CVE-2021-26419",
  "summary": "CVE-2021-26419 is fixed in 30 products on 1 platform, first by KB5003197, released May 11, 2021. It is not reported as exploited, but the vendor rates exploitation more likely. Patch Radar priority: Urgent.",
  "title": "Scripting Engine Memory Corruption Vulnerability",
  "description": "",
  "published": "2021-05-11T12:00:00Z",
  "severity": "Critical",
  "cvss": 6.4,
  "epss": 0.22767,
  "epssPercentile": 0.97741,
  "priority": "Urgent",
  "priorityTier": 2,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "exploitabilityAssessment": "Exploitation More Likely",
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-26419",
  "fixes": [
    {
      "platform": "microsoft",
      "product": "Internet Explorer 11 on Windows 10 Version 1607 for 32-bit Systems",
      "fixedVersion": "14393.4402",
      "fix": "KB5003197",
      "url": "https://patchblox.com/security/fix/microsoft/kb5003197",
      "released": "2021-05-11T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Internet Explorer 11 on Windows 10 Version 1607 for x64-based Systems",
      "fixedVersion": "14393.4402",
      "fix": "KB5003197",
      "url": "https://patchblox.com/security/fix/microsoft/kb5003197",
      "released": "2021-05-11T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Internet Explorer 11 on Windows 10 Version 1803 for 32-bit Systems",
      "fixedVersion": "17134.2208",
      "fix": "KB5003174",
      "url": "https://patchblox.com/security/fix/microsoft/kb5003174",
      "released": "2021-05-11T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Internet Explorer 11 on Windows 10 Version 1803 for ARM64-based Systems",
      "fixedVersion": "17134.2208",
      "fix": "KB5003174",
      "url": "https://patchblox.com/security/fix/microsoft/kb5003174",
      "released": "2021-05-11T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Internet Explorer 11 on Windows 10 Version 1803 for x64-based Systems",
      "fixedVersion": "17134.2208",
      "fix": "KB5003174",
      "url": "https://patchblox.com/security/fix/microsoft/kb5003174",
      "released": "2021-05-11T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Internet Explorer 11 on Windows 10 Version 1809 for 32-bit Systems",
      "fixedVersion": "17763.1935",
      "fix": "KB5003171",
      "url": "https://patchblox.com/security/fix/microsoft/kb5003171",
      "released": "2021-05-11T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Internet Explorer 11 on Windows 10 Version 1809 for ARM64-based Systems",
      "fixedVersion": "17763.1935",
      "fix": "KB5003171",
      "url": "https://patchblox.com/security/fix/microsoft/kb5003171",
      "released": "2021-05-11T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Internet Explorer 11 on Windows 10 Version 1809 for x64-based Systems",
      "fixedVersion": "17763.1935",
      "fix": "KB5003171",
      "url": "https://patchblox.com/security/fix/microsoft/kb5003171",
      "released": "2021-05-11T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Internet Explorer 11 on Windows 10 Version 1909 for 32-bit Systems",
      "fixedVersion": "18363.1556",
      "fix": "KB5003169",
      "url": "https://patchblox.com/security/fix/microsoft/kb5003169",
      "released": "2021-05-11T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Internet Explorer 11 on Windows 10 Version 1909 for ARM64-based Systems",
      "fixedVersion": "18363.1556",
      "fix": "KB5003169",
      "url": "https://patchblox.com/security/fix/microsoft/kb5003169",
      "released": "2021-05-11T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Internet Explorer 11 on Windows 10 Version 1909 for x64-based Systems",
      "fixedVersion": "18363.1556",
      "fix": "KB5003169",
      "url": "https://patchblox.com/security/fix/microsoft/kb5003169",
      "released": "2021-05-11T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Internet Explorer 11 on Windows 10 Version 2004 for 32-bit Systems",
      "fixedVersion": "",
      "fix": "KB5003173",
      "url": "https://patchblox.com/security/fix/microsoft/kb5003173",
      "released": "2021-05-11T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Internet Explorer 11 on Windows 10 Version 2004 for ARM64-based Systems",
      "fixedVersion": "",
      "fix": "KB5003173",
      "url": "https://patchblox.com/security/fix/microsoft/kb5003173",
      "released": "2021-05-11T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Internet Explorer 11 on Windows 10 Version 2004 for x64-based Systems",
      "fixedVersion": "",
      "fix": "KB5003173",
      "url": "https://patchblox.com/security/fix/microsoft/kb5003173",
      "released": "2021-05-11T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Internet Explorer 11 on Windows 10 Version 20H2 for 32-bit Systems",
      "fixedVersion": "",
      "fix": "KB5003173",
      "url": "https://patchblox.com/security/fix/microsoft/kb5003173",
      "released": "2021-05-11T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Internet Explorer 11 on Windows 10 Version 20H2 for ARM64-based Systems",
      "fixedVersion": "",
      "fix": "KB5003173",
      "url": "https://patchblox.com/security/fix/microsoft/kb5003173",
      "released": "2021-05-11T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Internet Explorer 11 on Windows 10 for 32-bit Systems",
      "fixedVersion": "10240.18932",
      "fix": "KB5003172",
      "url": "https://patchblox.com/security/fix/microsoft/kb5003172",
      "released": "2021-05-11T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Internet Explorer 11 on Windows 10 for x64-based Systems",
      "fixedVersion": "10240.18932",
      "fix": "KB5003172",
      "url": "https://patchblox.com/security/fix/microsoft/kb5003172",
      "released": "2021-05-11T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Internet Explorer 11 on Windows 7 for 32-bit Systems Service Pack 1",
      "fixedVersion": "",
      "fix": "KB5003233",
      "url": "https://patchblox.com/security/fix/microsoft/kb5003233",
      "released": "2021-05-11T12:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Internet Explorer 11 on Windows 7 for 32-bit Systems Service Pack 1",
      "fixedVersion": "",
      "fix": "KB5003165",
      "url": "https://patchblox.com/security/fix/microsoft/kb5003165",
      "released": "2021-05-11T12:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Internet Explorer 11 on Windows 7 for x64-based Systems Service Pack 1",
      "fixedVersion": "",
      "fix": "KB5003233",
      "url": "https://patchblox.com/security/fix/microsoft/kb5003233",
      "released": "2021-05-11T12:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Internet Explorer 11 on Windows 7 for x64-based Systems Service Pack 1",
      "fixedVersion": "",
      "fix": "KB5003165",
      "url": "https://patchblox.com/security/fix/microsoft/kb5003165",
      "released": "2021-05-11T12:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Internet Explorer 11 on Windows 8.1 for 32-bit systems",
      "fixedVersion": "",
      "fix": "KB5003209",
      "url": "https://patchblox.com/security/fix/microsoft/kb5003209",
      "released": "2021-05-11T12:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Internet Explorer 11 on Windows 8.1 for 32-bit systems",
      "fixedVersion": "",
      "fix": "KB5003165",
      "url": "https://patchblox.com/security/fix/microsoft/kb5003165",
      "released": "2021-05-11T12:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Internet Explorer 11 on Windows 8.1 for x64-based systems",
      "fixedVersion": "",
      "fix": "KB5003209",
      "url": "https://patchblox.com/security/fix/microsoft/kb5003209",
      "released": "2021-05-11T12:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Internet Explorer 11 on Windows 8.1 for x64-based systems",
      "fixedVersion": "",
      "fix": "KB5003165",
      "url": "https://patchblox.com/security/fix/microsoft/kb5003165",
      "released": "2021-05-11T12:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Internet Explorer 11 on Windows RT 8.1",
      "fixedVersion": "",
      "fix": "KB5003209",
      "url": "https://patchblox.com/security/fix/microsoft/kb5003209",
      "released": "2021-05-11T12:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Internet Explorer 11 on Windows Server 2008 R2 for x64-based Systems Service Pack 1",
      "fixedVersion": "",
      "fix": "KB5003233",
      "url": "https://patchblox.com/security/fix/microsoft/kb5003233",
      "released": "2021-05-11T12:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Internet Explorer 11 on Windows Server 2008 R2 for x64-based Systems Service Pack 1",
      "fixedVersion": "",
      "fix": "KB5003165",
      "url": "https://patchblox.com/security/fix/microsoft/kb5003165",
      "released": "2021-05-11T12:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Internet Explorer 11 on Windows Server 2012",
      "fixedVersion": "",
      "fix": "KB5003208",
      "url": "https://patchblox.com/security/fix/microsoft/kb5003208",
      "released": "2021-05-11T12:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Internet Explorer 11 on Windows Server 2012",
      "fixedVersion": "",
      "fix": "KB5003165",
      "url": "https://patchblox.com/security/fix/microsoft/kb5003165",
      "released": "2021-05-11T12:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Internet Explorer 11 on Windows Server 2012 R2",
      "fixedVersion": "",
      "fix": "KB5003209",
      "url": "https://patchblox.com/security/fix/microsoft/kb5003209",
      "released": "2021-05-11T12:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Internet Explorer 11 on Windows Server 2012 R2",
      "fixedVersion": "",
      "fix": "KB5003165",
      "url": "https://patchblox.com/security/fix/microsoft/kb5003165",
      "released": "2021-05-11T12:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Internet Explorer 11 on Windows Server 2016",
      "fixedVersion": "14393.4402",
      "fix": "KB5003197",
      "url": "https://patchblox.com/security/fix/microsoft/kb5003197",
      "released": "2021-05-11T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Internet Explorer 11 on Windows Server 2019",
      "fixedVersion": "17763.1935",
      "fix": "KB5003171",
      "url": "https://patchblox.com/security/fix/microsoft/kb5003171",
      "released": "2021-05-11T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Internet Explorer 9 on Windows Server 2008 for 32-bit Systems Service Pack 2",
      "fixedVersion": "",
      "fix": "KB5003210",
      "url": "https://patchblox.com/security/fix/microsoft/kb5003210",
      "released": "2021-05-11T12:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Internet Explorer 9 on Windows Server 2008 for 32-bit Systems Service Pack 2",
      "fixedVersion": "",
      "fix": "KB5003165",
      "url": "https://patchblox.com/security/fix/microsoft/kb5003165",
      "released": "2021-05-11T12:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Internet Explorer 9 on Windows Server 2008 for x64-based Systems Service Pack 2",
      "fixedVersion": "",
      "fix": "KB5003210",
      "url": "https://patchblox.com/security/fix/microsoft/kb5003210",
      "released": "2021-05-11T12:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Internet Explorer 9 on Windows Server 2008 for x64-based Systems Service Pack 2",
      "fixedVersion": "",
      "fix": "KB5003165",
      "url": "https://patchblox.com/security/fix/microsoft/kb5003165",
      "released": "2021-05-11T12:00:00Z"
    }
  ],
  "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"
  }
}