{"id":"CVE-2020-0766","aliases":["EUVD-2020-2255","GHSA-qg55-26rh-hq58"],"status":"published","title":"Microsoft Store Runtime Elevation of Privilege Vulnerability","description":"\u003cp\u003eAn elevation of privilege vulnerability exists when the Microsoft Store Runtime improperly handles memory.\u003c/p\u003e\n\u003cp\u003eTo exploit this vulnerability, an attacker would first have to gain execution on the victim system. An attacker could then run a specially crafted application to elevate privileges.\u003c/p\u003e\n\u003cp\u003eThe security update addresses the vulnerability by correcting how the Microsoft Store Runtime handles memory.\u003c/p\u003e","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.00931,"percentile":0.609,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-269"],"published":"2020-09-11T17:08:21Z","modified":"2026-06-17T02:46:33Z","products":[{"vendor":"microsoft","product":"windows 10 version 1607"},{"vendor":"microsoft","product":"windows 10 version 1709"},{"vendor":"microsoft","product":"windows 10 version 1709 for 32-bit systems"},{"vendor":"microsoft","product":"windows 10 version 1803"},{"vendor":"microsoft","product":"windows 10 version 1809"},{"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"},{"vendor":"microsoft","product":"windows 10 version 2004"},{"vendor":"microsoft","product":"windows server 2016"},{"vendor":"microsoft","product":"windows server 2016 (server core installation)"},{"vendor":"microsoft","product":"windows server 2019"},{"vendor":"microsoft","product":"windows server 2019 (server core installation)"},{"vendor":"microsoft","product":"windows server version 2004"},{"vendor":"microsoft","product":"windows server, version 1903 (server core installation)"},{"vendor":"microsoft","product":"windows server, version 1909 (server core installation)"},{"vendor":"microsoft","product":"windows_10"},{"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-2020-0766","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-0766"},{"url":"https://github.com/advisories/GHSA-qg55-26rh-hq58"}],"sources":{"cve":[{"id":"CVE-2020-0766","title":"Microsoft Store Runtime Elevation of Privilege Vulnerability","description":"\u003cp\u003eAn elevation of privilege vulnerability exists when the Microsoft Store Runtime improperly handles memory.\u003c/p\u003e\n\u003cp\u003eTo exploit this vulnerability, an attacker would first have to gain execution on the victim system. An attacker could then run a specially crafted application to elevate privileges.\u003c/p\u003e\n\u003cp\u003eThe security update addresses the vulnerability by correcting how the Microsoft Store Runtime handles memory.\u003c/p\u003e","status":"published","published":"2020-09-11T17:08:21Z","modified":"2024-08-04T06:11:05.547Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C","level":"high","assessor":"cna"}],"updated_at":"2026-11-02T14:36:00.280422Z"}],"euvd":[{"id":"EUVD-2020-2255","description":"\u003cp\u003eAn elevation of privilege vulnerability exists when the Microsoft Store Runtime improperly handles memory.\u003c/p\u003e\n\u003cp\u003eTo exploit this vulnerability, an attacker would first have to gain execution on the victim system. An attacker could then run a specially crafted application to elevate privileges.\u003c/p\u003e\n\u003cp\u003eThe security update addresses the vulnerability by correcting how the Microsoft Store Runtime handles memory.\u003c/p\u003e","status":"published","published":"2020-09-11T17:08:21Z","modified":"2024-08-04T06:11:05Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-03T03:08:18.296952Z"}],"ghsa":[{"id":"GHSA-qg55-26rh-hq58","title":"An elevation of privilege vulnerability exists when the Microsoft Store Runtime improperly...","description":"An elevation of privilege vulnerability exists when the Microsoft Store Runtime improperly handles memory.To exploit this vulnerability, an attacker would first have to gain execution on the victim system, aka 'Microsoft Store Runtime Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2020-1146.","status":"published","published":"2022-05-24T17:27:53Z","modified":"2024-01-01T00:30:36Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-269"],"updated_at":"2026-11-02T14:55:19.223338Z"}],"nvd":[{"id":"CVE-2020-0766","description":"\u003cp\u003eAn elevation of privilege vulnerability exists when the Microsoft Store Runtime improperly handles memory.\u003c/p\u003e\n\u003cp\u003eTo exploit this vulnerability, an attacker would first have to gain execution on the victim system. An attacker could then run a specially crafted application to elevate privileges.\u003c/p\u003e\n\u003cp\u003eThe security update addresses the vulnerability by correcting how the Microsoft Store Runtime handles memory.\u003c/p\u003e","status":"published","published":"2020-09-11T17:15:13.667Z","modified":"2026-06-17T02:46:33.58Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"2.0","score":4.6,"vector":"AV:L/AC:L/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:06:14.981587Z"}]}}