{
  "cveId": "CVE-2026-0390",
  "url": "https://patchblox.com/security/cve/CVE-2026-0390",
  "summary": "CVE-2026-0390 is fixed in 16 products on 1 platform, first by KB5082198, released April 14, 2026. It is not reported as exploited, but the vendor rates exploitation more likely. Patch Radar priority: Urgent.",
  "title": "UEFI Secure Boot Security Feature Bypass Vulnerability",
  "description": "\u003Cp\u003EReliance on untrusted inputs in a security decision in Windows Boot Loader allows an authorized attacker to bypass a security feature locally.\u003C/p\u003E",
  "published": "2026-04-14T07:00:00Z",
  "severity": "Important",
  "cvss": 6.7,
  "cwe": "Reliance on Untrusted Inputs in a Security Decision",
  "epss": 0.00318,
  "epssPercentile": 0.24913,
  "priority": "Urgent",
  "priorityTier": 2,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "exploitabilityAssessment": "Exploitation More Likely",
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-0390",
  "fixes": [
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1607 for 32-bit Systems",
      "fixedVersion": "14393.9060",
      "fix": "KB5082198",
      "url": "https://patchblox.com/security/fix/microsoft/kb5082198",
      "released": "2026-04-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1607 for x64-based Systems",
      "fixedVersion": "14393.9060",
      "fix": "KB5082198",
      "url": "https://patchblox.com/security/fix/microsoft/kb5082198",
      "released": "2026-04-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1809 for 32-bit Systems",
      "fixedVersion": "17763.8644",
      "fix": "KB5082123",
      "url": "https://patchblox.com/security/fix/microsoft/kb5082123",
      "released": "2026-04-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1809 for x64-based Systems",
      "fixedVersion": "17763.8644",
      "fix": "KB5082123",
      "url": "https://patchblox.com/security/fix/microsoft/kb5082123",
      "released": "2026-04-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 21H2 for 32-bit Systems",
      "fixedVersion": "",
      "fix": "KB5082200",
      "url": "https://patchblox.com/security/fix/microsoft/kb5082200",
      "released": "2026-04-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 21H2 for ARM64-based Systems",
      "fixedVersion": "",
      "fix": "KB5082200",
      "url": "https://patchblox.com/security/fix/microsoft/kb5082200",
      "released": "2026-04-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 21H2 for x64-based Systems",
      "fixedVersion": "",
      "fix": "KB5082200",
      "url": "https://patchblox.com/security/fix/microsoft/kb5082200",
      "released": "2026-04-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 22H2 for 32-bit Systems",
      "fixedVersion": "",
      "fix": "KB5082200",
      "url": "https://patchblox.com/security/fix/microsoft/kb5082200",
      "released": "2026-04-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 22H2 for ARM64-based Systems",
      "fixedVersion": "",
      "fix": "KB5082200",
      "url": "https://patchblox.com/security/fix/microsoft/kb5082200",
      "released": "2026-04-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 22H2 for x64-based Systems",
      "fixedVersion": "",
      "fix": "KB5082200",
      "url": "https://patchblox.com/security/fix/microsoft/kb5082200",
      "released": "2026-04-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2016",
      "fixedVersion": "14393.9060",
      "fix": "KB5082198",
      "url": "https://patchblox.com/security/fix/microsoft/kb5082198",
      "released": "2026-04-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2016 (Server Core installation)",
      "fixedVersion": "14393.9060",
      "fix": "KB5082198",
      "url": "https://patchblox.com/security/fix/microsoft/kb5082198",
      "released": "2026-04-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2019",
      "fixedVersion": "17763.8644",
      "fix": "KB5082123",
      "url": "https://patchblox.com/security/fix/microsoft/kb5082123",
      "released": "2026-04-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2019 (Server Core installation)",
      "fixedVersion": "17763.8644",
      "fix": "KB5082123",
      "url": "https://patchblox.com/security/fix/microsoft/kb5082123",
      "released": "2026-04-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2022",
      "fixedVersion": "20348.5020",
      "fix": "KB5082142",
      "url": "https://patchblox.com/security/fix/microsoft/kb5082142",
      "released": "2026-04-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2022 (Server Core installation)",
      "fixedVersion": "20348.5020",
      "fix": "KB5082142",
      "url": "https://patchblox.com/security/fix/microsoft/kb5082142",
      "released": "2026-04-14T00:00:00Z"
    }
  ],
  "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"
  }
}