{
  "cveId": "CVE-2020-0601",
  "url": "https://patchblox.com/security/cve/CVE-2020-0601",
  "summary": "CVE-2020-0601 is fixed in 26 products on 1 platform, first by KB4534271, released January 14, 2020. It is being exploited: CISA added it to the Known Exploited Vulnerabilities catalog on November 3, 2021. Patch Radar priority: Patch now.",
  "title": "Windows CryptoAPI Spoofing Vulnerability",
  "description": "\u003Cp\u003EA spoofing vulnerability exists in the way Windows CryptoAPI (Crypt32.dll) validates Elliptic Curve Cryptography (ECC) certificates.\u003C/p\u003E\n\u003Cp\u003EAn attacker could exploit the vulnerability by using a spoofed code-signing certificate to sign a malicious executable, making it appear the file was from a trusted, legitimate source. The user would have no way of knowing the file was malicious, because the digital signature would appear to be from a trusted provider.\u003C/p\u003E\n\u003Cp\u003EA successful exploit could also allow the attacker to conduct man-in-the-middle attacks and decrypt confidential information on user connections to the affected software.\u003C/p\u003E\n\u003Cp\u003EThe security update addresses the vulnerability by ensuring that Windows CryptoAPI completely validates ECC certificates.\u003C/p\u003E",
  "published": "2020-01-14T08:00:00Z",
  "severity": "Important",
  "cvss": 8.1,
  "epss": 0.89078,
  "epssPercentile": 0.99781,
  "priority": "Patch now",
  "priorityTier": 1,
  "exploited": true,
  "vendorExploited": false,
  "disclosed": false,
  "exploitabilityAssessment": "Exploitation More Likely",
  "kev": {
    "added": "2021-11-03T00:00:00Z",
    "due": "2022-05-03T00:00:00Z",
    "ransomware": false,
    "requiredAction": "Apply updates per vendor instructions."
  },
  "vendorAdvisory": "https://msrc.microsoft.com/update-guide/vulnerability/CVE-2020-0601",
  "fixes": [
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1607 for 32-bit Systems",
      "fixedVersion": "14393.3443",
      "fix": "KB4534271",
      "url": "https://patchblox.com/security/fix/microsoft/kb4534271",
      "released": "2020-01-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1607 for x64-based Systems",
      "fixedVersion": "14393.3443",
      "fix": "KB4534271",
      "url": "https://patchblox.com/security/fix/microsoft/kb4534271",
      "released": "2020-01-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1709 for 32-bit Systems",
      "fixedVersion": "16299.1625",
      "fix": "KB4534276",
      "url": "https://patchblox.com/security/fix/microsoft/kb4534276",
      "released": "2020-01-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1709 for ARM64-based Systems",
      "fixedVersion": "16299.1625",
      "fix": "KB4534276",
      "url": "https://patchblox.com/security/fix/microsoft/kb4534276",
      "released": "2020-01-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1709 for x64-based Systems",
      "fixedVersion": "16299.1625",
      "fix": "KB4534276",
      "url": "https://patchblox.com/security/fix/microsoft/kb4534276",
      "released": "2020-01-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1803 for 32-bit Systems",
      "fixedVersion": "17134.1246",
      "fix": "KB4534293",
      "url": "https://patchblox.com/security/fix/microsoft/kb4534293",
      "released": "2020-01-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1803 for ARM64-based Systems",
      "fixedVersion": "17134.1246",
      "fix": "KB4534293",
      "url": "https://patchblox.com/security/fix/microsoft/kb4534293",
      "released": "2020-01-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1803 for x64-based Systems",
      "fixedVersion": "17134.1246",
      "fix": "KB4534293",
      "url": "https://patchblox.com/security/fix/microsoft/kb4534293",
      "released": "2020-01-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1809 for 32-bit Systems",
      "fixedVersion": "17763.973",
      "fix": "KB4534273",
      "url": "https://patchblox.com/security/fix/microsoft/kb4534273",
      "released": "2020-01-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1809 for ARM64-based Systems",
      "fixedVersion": "17763.973",
      "fix": "KB4534273",
      "url": "https://patchblox.com/security/fix/microsoft/kb4534273",
      "released": "2020-01-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1809 for x64-based Systems",
      "fixedVersion": "17763.973",
      "fix": "KB4534273",
      "url": "https://patchblox.com/security/fix/microsoft/kb4534273",
      "released": "2020-01-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1903 for 32-bit Systems",
      "fixedVersion": "",
      "fix": "KB4528760",
      "url": "https://patchblox.com/security/fix/microsoft/kb4528760",
      "released": "2020-01-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1903 for ARM64-based Systems",
      "fixedVersion": "",
      "fix": "KB4528760",
      "url": "https://patchblox.com/security/fix/microsoft/kb4528760",
      "released": "2020-01-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1903 for x64-based Systems",
      "fixedVersion": "",
      "fix": "KB4528760",
      "url": "https://patchblox.com/security/fix/microsoft/kb4528760",
      "released": "2020-01-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1909 for 32-bit Systems",
      "fixedVersion": "",
      "fix": "KB4528760",
      "url": "https://patchblox.com/security/fix/microsoft/kb4528760",
      "released": "2020-01-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1909 for ARM64-based Systems",
      "fixedVersion": "",
      "fix": "KB4528760",
      "url": "https://patchblox.com/security/fix/microsoft/kb4528760",
      "released": "2020-01-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1909 for x64-based Systems",
      "fixedVersion": "",
      "fix": "KB4528760",
      "url": "https://patchblox.com/security/fix/microsoft/kb4528760",
      "released": "2020-01-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 for 32-bit Systems",
      "fixedVersion": "10240.18453",
      "fix": "KB4534306",
      "url": "https://patchblox.com/security/fix/microsoft/kb4534306",
      "released": "2020-01-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 for x64-based Systems",
      "fixedVersion": "10240.18453",
      "fix": "KB4534306",
      "url": "https://patchblox.com/security/fix/microsoft/kb4534306",
      "released": "2020-01-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2016",
      "fixedVersion": "14393.3443",
      "fix": "KB4534271",
      "url": "https://patchblox.com/security/fix/microsoft/kb4534271",
      "released": "2020-01-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2016 (Server Core installation)",
      "fixedVersion": "14393.3443",
      "fix": "KB4534271",
      "url": "https://patchblox.com/security/fix/microsoft/kb4534271",
      "released": "2020-01-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2019",
      "fixedVersion": "17763.973",
      "fix": "KB4534273",
      "url": "https://patchblox.com/security/fix/microsoft/kb4534273",
      "released": "2020-01-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2019 (Server Core installation)",
      "fixedVersion": "17763.973",
      "fix": "KB4534273",
      "url": "https://patchblox.com/security/fix/microsoft/kb4534273",
      "released": "2020-01-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server, version 1803  (Server Core Installation)",
      "fixedVersion": "17134.1246",
      "fix": "KB4534293",
      "url": "https://patchblox.com/security/fix/microsoft/kb4534293",
      "released": "2020-01-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server, version 1903 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4528760",
      "url": "https://patchblox.com/security/fix/microsoft/kb4528760",
      "released": "2020-01-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server, version 1909 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4528760",
      "url": "https://patchblox.com/security/fix/microsoft/kb4528760",
      "released": "2020-01-14T00:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-07T18:46:35Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}