{
  "cveId": "CVE-2026-20853",
  "url": "https://patchblox.com/security/cve/CVE-2026-20853",
  "summary": "CVE-2026-20853 is fixed in 16 products on 1 platform, first by KB5073722, released January 13, 2026. It is not reported as exploited. Patch Radar priority: High.",
  "title": "Windows WalletService Elevation of Privilege Vulnerability",
  "description": "\u003Cp\u003EConcurrent execution using shared resource with improper synchronization (\u0027race condition\u0027) in Windows WalletService allows an unauthorized attacker to elevate privileges locally.\u003C/p\u003E",
  "published": "2026-01-13T08:00:00Z",
  "severity": "Important",
  "cvss": 7.4,
  "cwe": "Concurrent Execution using Shared Resource with Improper Synchronization (\u0027Race Condition\u0027)",
  "epss": 0.00313,
  "epssPercentile": 0.24393,
  "priority": "High",
  "priorityTier": 3,
  "exploited": false,
  "vendorExploited": false,
  "disclosed": false,
  "exploitabilityAssessment": "Exploitation Less Likely",
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20853",
  "fixes": [
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1607 for 32-bit Systems",
      "fixedVersion": "14393.8783",
      "fix": "KB5073722",
      "url": "https://patchblox.com/security/fix/microsoft/kb5073722",
      "released": "2026-01-13T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1607 for x64-based Systems",
      "fixedVersion": "14393.8783",
      "fix": "KB5073722",
      "url": "https://patchblox.com/security/fix/microsoft/kb5073722",
      "released": "2026-01-13T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1809 for 32-bit Systems",
      "fixedVersion": "17763.8276",
      "fix": "KB5073723",
      "url": "https://patchblox.com/security/fix/microsoft/kb5073723",
      "released": "2026-01-13T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1809 for x64-based Systems",
      "fixedVersion": "17763.8276",
      "fix": "KB5073723",
      "url": "https://patchblox.com/security/fix/microsoft/kb5073723",
      "released": "2026-01-13T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 21H2 for 32-bit Systems",
      "fixedVersion": "",
      "fix": "KB5073724",
      "url": "https://patchblox.com/security/fix/microsoft/kb5073724",
      "released": "2026-01-13T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 21H2 for ARM64-based Systems",
      "fixedVersion": "",
      "fix": "KB5073724",
      "url": "https://patchblox.com/security/fix/microsoft/kb5073724",
      "released": "2026-01-13T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 21H2 for x64-based Systems",
      "fixedVersion": "",
      "fix": "KB5073724",
      "url": "https://patchblox.com/security/fix/microsoft/kb5073724",
      "released": "2026-01-13T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 22H2 for 32-bit Systems",
      "fixedVersion": "",
      "fix": "KB5073724",
      "url": "https://patchblox.com/security/fix/microsoft/kb5073724",
      "released": "2026-01-13T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 22H2 for ARM64-based Systems",
      "fixedVersion": "",
      "fix": "KB5073724",
      "url": "https://patchblox.com/security/fix/microsoft/kb5073724",
      "released": "2026-01-13T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 22H2 for x64-based Systems",
      "fixedVersion": "",
      "fix": "KB5073724",
      "url": "https://patchblox.com/security/fix/microsoft/kb5073724",
      "released": "2026-01-13T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 11 Version 23H2 for ARM64-based Systems",
      "fixedVersion": "22631.6491",
      "fix": "KB5073455",
      "url": "https://patchblox.com/security/fix/microsoft/kb5073455",
      "released": "2026-01-13T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 11 Version 23H2 for x64-based Systems",
      "fixedVersion": "22631.6491",
      "fix": "KB5073455",
      "url": "https://patchblox.com/security/fix/microsoft/kb5073455",
      "released": "2026-01-13T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 11 Version 24H2 for ARM64-based Systems",
      "fixedVersion": "",
      "fix": "KB5074109",
      "url": "https://patchblox.com/security/fix/microsoft/kb5074109",
      "released": "2026-01-13T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 11 Version 24H2 for x64-based Systems",
      "fixedVersion": "",
      "fix": "KB5074109",
      "url": "https://patchblox.com/security/fix/microsoft/kb5074109",
      "released": "2026-01-13T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 11 Version 25H2 for ARM64-based Systems",
      "fixedVersion": "",
      "fix": "KB5074109",
      "url": "https://patchblox.com/security/fix/microsoft/kb5074109",
      "released": "2026-01-13T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 11 Version 25H2 for x64-based Systems",
      "fixedVersion": "",
      "fix": "KB5074109",
      "url": "https://patchblox.com/security/fix/microsoft/kb5074109",
      "released": "2026-01-13T00:00:00Z"
    }
  ],
  "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"
  }
}