{
  "cveId": "CVE-2020-1020",
  "url": "https://patchblox.com/security/cve/CVE-2020-1020",
  "summary": "CVE-2020-1020 is fixed in 41 products on 1 platform, first by KB4550929, released April 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": "Adobe Font Manager Library Remote Code Execution Vulnerability",
  "description": "\u003Cp\u003EA remote code execution vulnerability exists in Microsoft Windows when the Windows Adobe Type Manager Library improperly handles a specially-crafted multi-master font - Adobe Type 1 PostScript format.\u003C/p\u003E\n\u003Cp\u003EFor all systems except Windows 10, an attacker who successfully exploited the vulnerability could execute code remotely. For systems running Windows 10, an attacker who successfully exploited the vulnerability could execute code in an AppContainer sandbox context with limited privileges and capabilities. An attacker could then install programs; view, change, or delete data; or create new accounts with full user rights.\u003C/p\u003E\n\u003Cp\u003EThere are multiple ways an attacker could exploit the vulnerability, such as convincing a user to open a specially crafted document or viewing it in the Windows Preview pane.\u003C/p\u003E\n\u003Cp\u003EThe update addresses the vulnerability by correcting how the Windows Adobe Type Manager Library handles Type1 fonts.\u003C/p\u003E",
  "published": "2020-04-14T07:00:00Z",
  "severity": "Important",
  "cvss": 7.8,
  "epss": 0.65037,
  "epssPercentile": 0.99256,
  "priority": "Patch now",
  "priorityTier": 1,
  "exploited": true,
  "vendorExploited": true,
  "disclosed": true,
  "exploitabilityAssessment": "Exploitation Less 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-2020-1020",
  "fixes": [
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1607 for 32-bit Systems",
      "fixedVersion": "14393.3630",
      "fix": "KB4550929",
      "url": "https://patchblox.com/security/fix/microsoft/kb4550929",
      "released": "2020-04-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1607 for x64-based Systems",
      "fixedVersion": "14393.3630",
      "fix": "KB4550929",
      "url": "https://patchblox.com/security/fix/microsoft/kb4550929",
      "released": "2020-04-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1709 for 32-bit Systems",
      "fixedVersion": "16299.1806",
      "fix": "KB4550927",
      "url": "https://patchblox.com/security/fix/microsoft/kb4550927",
      "released": "2020-04-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1709 for ARM64-based Systems",
      "fixedVersion": "16299.1806",
      "fix": "KB4550927",
      "url": "https://patchblox.com/security/fix/microsoft/kb4550927",
      "released": "2020-04-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1709 for x64-based Systems",
      "fixedVersion": "16299.1806",
      "fix": "KB4550927",
      "url": "https://patchblox.com/security/fix/microsoft/kb4550927",
      "released": "2020-04-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1803 for 32-bit Systems",
      "fixedVersion": "17134.1425",
      "fix": "KB4550922",
      "url": "https://patchblox.com/security/fix/microsoft/kb4550922",
      "released": "2020-04-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1803 for ARM64-based Systems",
      "fixedVersion": "17134.1425",
      "fix": "KB4550922",
      "url": "https://patchblox.com/security/fix/microsoft/kb4550922",
      "released": "2020-04-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1803 for x64-based Systems",
      "fixedVersion": "17134.1425",
      "fix": "KB4550922",
      "url": "https://patchblox.com/security/fix/microsoft/kb4550922",
      "released": "2020-04-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1809 for 32-bit Systems",
      "fixedVersion": "17763.1158",
      "fix": "KB4549949",
      "url": "https://patchblox.com/security/fix/microsoft/kb4549949",
      "released": "2020-04-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1809 for ARM64-based Systems",
      "fixedVersion": "17763.1158",
      "fix": "KB4549949",
      "url": "https://patchblox.com/security/fix/microsoft/kb4549949",
      "released": "2020-04-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1809 for x64-based Systems",
      "fixedVersion": "17763.1158",
      "fix": "KB4549949",
      "url": "https://patchblox.com/security/fix/microsoft/kb4549949",
      "released": "2020-04-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1903 for 32-bit Systems",
      "fixedVersion": "",
      "fix": "KB4549951",
      "url": "https://patchblox.com/security/fix/microsoft/kb4549951",
      "released": "2020-04-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1903 for ARM64-based Systems",
      "fixedVersion": "",
      "fix": "KB4549951",
      "url": "https://patchblox.com/security/fix/microsoft/kb4549951",
      "released": "2020-04-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1903 for x64-based Systems",
      "fixedVersion": "",
      "fix": "KB4549951",
      "url": "https://patchblox.com/security/fix/microsoft/kb4549951",
      "released": "2020-04-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1909 for 32-bit Systems",
      "fixedVersion": "",
      "fix": "KB4549951",
      "url": "https://patchblox.com/security/fix/microsoft/kb4549951",
      "released": "2020-04-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1909 for ARM64-based Systems",
      "fixedVersion": "",
      "fix": "KB4549951",
      "url": "https://patchblox.com/security/fix/microsoft/kb4549951",
      "released": "2020-04-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 Version 1909 for x64-based Systems",
      "fixedVersion": "",
      "fix": "KB4549951",
      "url": "https://patchblox.com/security/fix/microsoft/kb4549951",
      "released": "2020-04-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 for 32-bit Systems",
      "fixedVersion": "10240.18545",
      "fix": "KB4550930",
      "url": "https://patchblox.com/security/fix/microsoft/kb4550930",
      "released": "2020-04-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 10 for x64-based Systems",
      "fixedVersion": "10240.18545",
      "fix": "KB4550930",
      "url": "https://patchblox.com/security/fix/microsoft/kb4550930",
      "released": "2020-04-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 7 for 32-bit Systems Service Pack 1",
      "fixedVersion": "",
      "fix": "KB4550965",
      "url": "https://patchblox.com/security/fix/microsoft/kb4550965",
      "released": "2020-04-14T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 7 for 32-bit Systems Service Pack 1",
      "fixedVersion": "",
      "fix": "KB4550964",
      "url": "https://patchblox.com/security/fix/microsoft/kb4550964",
      "released": "2020-04-14T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 7 for x64-based Systems Service Pack 1",
      "fixedVersion": "",
      "fix": "KB4550965",
      "url": "https://patchblox.com/security/fix/microsoft/kb4550965",
      "released": "2020-04-14T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 7 for x64-based Systems Service Pack 1",
      "fixedVersion": "",
      "fix": "KB4550964",
      "url": "https://patchblox.com/security/fix/microsoft/kb4550964",
      "released": "2020-04-14T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 8.1 for 32-bit systems",
      "fixedVersion": "",
      "fix": "KB4550961",
      "url": "https://patchblox.com/security/fix/microsoft/kb4550961",
      "released": "2020-04-14T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 8.1 for 32-bit systems",
      "fixedVersion": "",
      "fix": "KB4550970",
      "url": "https://patchblox.com/security/fix/microsoft/kb4550970",
      "released": "2020-04-14T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 8.1 for x64-based systems",
      "fixedVersion": "",
      "fix": "KB4550961",
      "url": "https://patchblox.com/security/fix/microsoft/kb4550961",
      "released": "2020-04-14T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows 8.1 for x64-based systems",
      "fixedVersion": "",
      "fix": "KB4550970",
      "url": "https://patchblox.com/security/fix/microsoft/kb4550970",
      "released": "2020-04-14T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows RT 8.1",
      "fixedVersion": "",
      "fix": "KB4550961",
      "url": "https://patchblox.com/security/fix/microsoft/kb4550961",
      "released": "2020-04-14T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 R2 for x64-based Systems Service Pack 1",
      "fixedVersion": "",
      "fix": "KB4550965",
      "url": "https://patchblox.com/security/fix/microsoft/kb4550965",
      "released": "2020-04-14T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 R2 for x64-based Systems Service Pack 1",
      "fixedVersion": "",
      "fix": "KB4550964",
      "url": "https://patchblox.com/security/fix/microsoft/kb4550964",
      "released": "2020-04-14T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4550965",
      "url": "https://patchblox.com/security/fix/microsoft/kb4550965",
      "released": "2020-04-14T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 R2 for x64-based Systems Service Pack 1 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4550964",
      "url": "https://patchblox.com/security/fix/microsoft/kb4550964",
      "released": "2020-04-14T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 for 32-bit Systems Service Pack 2",
      "fixedVersion": "",
      "fix": "KB4550957",
      "url": "https://patchblox.com/security/fix/microsoft/kb4550957",
      "released": "2020-04-14T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 for 32-bit Systems Service Pack 2",
      "fixedVersion": "",
      "fix": "KB4550951",
      "url": "https://patchblox.com/security/fix/microsoft/kb4550951",
      "released": "2020-04-14T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4550957",
      "url": "https://patchblox.com/security/fix/microsoft/kb4550957",
      "released": "2020-04-14T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 for 32-bit Systems Service Pack 2 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4550951",
      "url": "https://patchblox.com/security/fix/microsoft/kb4550951",
      "released": "2020-04-14T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 for x64-based Systems Service Pack 2",
      "fixedVersion": "",
      "fix": "KB4550957",
      "url": "https://patchblox.com/security/fix/microsoft/kb4550957",
      "released": "2020-04-14T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 for x64-based Systems Service Pack 2",
      "fixedVersion": "",
      "fix": "KB4550951",
      "url": "https://patchblox.com/security/fix/microsoft/kb4550951",
      "released": "2020-04-14T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4550957",
      "url": "https://patchblox.com/security/fix/microsoft/kb4550957",
      "released": "2020-04-14T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2008 for x64-based Systems Service Pack 2 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4550951",
      "url": "https://patchblox.com/security/fix/microsoft/kb4550951",
      "released": "2020-04-14T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2012",
      "fixedVersion": "",
      "fix": "KB4550917",
      "url": "https://patchblox.com/security/fix/microsoft/kb4550917",
      "released": "2020-04-14T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2012",
      "fixedVersion": "",
      "fix": "KB4550971",
      "url": "https://patchblox.com/security/fix/microsoft/kb4550971",
      "released": "2020-04-14T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2012 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4550917",
      "url": "https://patchblox.com/security/fix/microsoft/kb4550917",
      "released": "2020-04-14T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2012 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4550971",
      "url": "https://patchblox.com/security/fix/microsoft/kb4550971",
      "released": "2020-04-14T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2012 R2",
      "fixedVersion": "",
      "fix": "KB4550961",
      "url": "https://patchblox.com/security/fix/microsoft/kb4550961",
      "released": "2020-04-14T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2012 R2",
      "fixedVersion": "",
      "fix": "KB4550970",
      "url": "https://patchblox.com/security/fix/microsoft/kb4550970",
      "released": "2020-04-14T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2012 R2 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4550961",
      "url": "https://patchblox.com/security/fix/microsoft/kb4550961",
      "released": "2020-04-14T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2012 R2 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4550970",
      "url": "https://patchblox.com/security/fix/microsoft/kb4550970",
      "released": "2020-04-14T07:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2016",
      "fixedVersion": "14393.3630",
      "fix": "KB4550929",
      "url": "https://patchblox.com/security/fix/microsoft/kb4550929",
      "released": "2020-04-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2016 (Server Core installation)",
      "fixedVersion": "14393.3630",
      "fix": "KB4550929",
      "url": "https://patchblox.com/security/fix/microsoft/kb4550929",
      "released": "2020-04-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2019",
      "fixedVersion": "17763.1158",
      "fix": "KB4549949",
      "url": "https://patchblox.com/security/fix/microsoft/kb4549949",
      "released": "2020-04-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server 2019 (Server Core installation)",
      "fixedVersion": "17763.1158",
      "fix": "KB4549949",
      "url": "https://patchblox.com/security/fix/microsoft/kb4549949",
      "released": "2020-04-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server, version 1803  (Server Core Installation)",
      "fixedVersion": "17134.1425",
      "fix": "KB4550922",
      "url": "https://patchblox.com/security/fix/microsoft/kb4550922",
      "released": "2020-04-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server, version 1903 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4549951",
      "url": "https://patchblox.com/security/fix/microsoft/kb4549951",
      "released": "2020-04-14T00:00:00Z"
    },
    {
      "platform": "microsoft",
      "product": "Windows Server, version 1909 (Server Core installation)",
      "fixedVersion": "",
      "fix": "KB4549951",
      "url": "https://patchblox.com/security/fix/microsoft/kb4549951",
      "released": "2020-04-14T00:00:00Z"
    }
  ],
  "noFixYet": [],
  "dataAsOf": "2026-11-08T00:53:09Z",
  "attribution": {
    "text": "Data: Patchblox Patch Radar",
    "url": "https://patchblox.com/security/patch-radar",
    "terms": "https://patchblox.com/security/patch-radar/use-the-data"
  }
}