{"id":"CVE-2020-1436","aliases":["EUVD-2020-12312","GHSA-g587-x8m2-frwg"],"status":"published","title":"A remote code execution vulnerability exists when the Windows font library improperly handles...","description":"A remote code execution vulnerability exists when the Windows font library improperly handles specially crafted fonts.For all systems except Windows 10, an attacker who successfully exploited the vulnerability could execute code remotely, aka 'Windows Font Library Remote Code Execution Vulnerability'.","severity":{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary","from":"nvd"},"epss":{"day":"2026-11-09","score":0.21277,"percentile":0.97613,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20","CWE-787"],"published":"2020-07-14T22:54:43Z","modified":"2026-06-17T03:01:24Z","products":[{"vendor":"microsoft","product":"windows"},{"vendor":"microsoft","product":"windows 10 version 1903 for 32-bit systems"},{"vendor":"microsoft","product":"windows 10 version 1903 for arm64-based systems"},{"vendor":"microsoft","product":"windows 10 version 1903 for x64-based systems"},{"vendor":"microsoft","product":"windows 10 version 1909 for 32-bit systems"},{"vendor":"microsoft","product":"windows 10 version 1909 for arm64-based systems"},{"vendor":"microsoft","product":"windows 10 version 1909 for x64-based systems"},{"vendor":"microsoft","product":"windows 10 version 2004 for 32-bit systems"},{"vendor":"microsoft","product":"windows 10 version 2004 for arm64-based systems"},{"vendor":"microsoft","product":"windows 10 version 2004 for x64-based systems"},{"vendor":"microsoft","product":"windows server"},{"vendor":"microsoft","product":"windows server, version 1903 (server core installation)"},{"vendor":"microsoft","product":"windows server, version 1909 (server core installation)"},{"vendor":"microsoft","product":"windows server, version 2004 (server core installation)"},{"vendor":"microsoft","product":"windows_10"},{"vendor":"microsoft","product":"windows_7"},{"vendor":"microsoft","product":"windows_8.1"},{"vendor":"microsoft","product":"windows_rt_8.1"},{"vendor":"microsoft","product":"windows_server_2008"},{"vendor":"microsoft","product":"windows_server_2012"},{"vendor":"microsoft","product":"windows_server_2016"},{"vendor":"microsoft","product":"windows_server_2019"}],"references":[{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-1436","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://www.zerodayinitiative.com/advisories/ZDI-20-877/","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"http://www.openwall.com/lists/oss-security/2020/08/25/3","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Third Party Advisory"]},{"url":"http://www.openwall.com/lists/oss-security/2020/08/25/5","tags":["mailing-list","x_refsource_MLIST","x_transferred","Mailing List","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-1436"},{"url":"https://github.com/advisories/GHSA-g587-x8m2-frwg"}],"sources":{"cve":[{"id":"CVE-2020-1436","description":"A remote code execution vulnerability exists when the Windows font library improperly handles specially crafted fonts.For all systems except Windows 10, an attacker who successfully exploited the vulnerability could execute code remotely, aka 'Windows Font Library Remote Code Execution Vulnerability'.","status":"published","published":"2020-07-14T22:54:43Z","modified":"2024-08-04T06:39:10.483Z","updated_at":"2026-11-02T14:35:56.638833Z"}],"euvd":[{"id":"EUVD-2020-12312","description":"A remote code execution vulnerability exists when the Windows font library improperly handles specially crafted fonts.For all systems except Windows 10, an attacker who successfully exploited the vulnerability could execute code remotely, aka 'Windows Font Library Remote Code Execution Vulnerability'.","status":"published","published":"2020-07-14T22:54:43Z","modified":"2024-08-04T06:39:10Z","updated_at":"2026-11-03T03:08:12.895997Z"}],"ghsa":[{"id":"GHSA-g587-x8m2-frwg","title":"A remote code execution vulnerability exists when the Windows font library improperly handles...","description":"A remote code execution vulnerability exists when the Windows font library improperly handles specially crafted fonts.For all systems except Windows 10, an attacker who successfully exploited the vulnerability could execute code remotely, aka 'Windows Font Library Remote Code Execution Vulnerability'.","status":"published","published":"2022-05-24T17:23:08Z","modified":"2023-01-29T05:03:22Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-20","CWE-787"],"updated_at":"2026-11-02T14:45:18.510464Z"}],"nvd":[{"id":"CVE-2020-1436","description":"A remote code execution vulnerability exists when the Windows font library improperly handles specially crafted fonts.For all systems except Windows 10, an attacker who successfully exploited the vulnerability could execute code remotely, aka 'Windows Font Library Remote Code Execution Vulnerability'.","status":"published","published":"2020-07-14T23:15:19.137Z","modified":"2026-06-17T03:01:24.573Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"primary"},{"version":"2.0","score":6.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"cwes":["CWE-787"],"updated_at":"2026-11-02T14:06:09.126752Z"}]}}