{"id":"CVE-2020-16879","aliases":["EUVD-2020-8837","GHSA-32xq-w4g5-fj4x"],"status":"published","title":"Projected Filesystem Information Disclosure Vulnerability","description":"\u003cp\u003eAn information disclosure vulnerability exists when a Windows Projected Filesystem improperly handles file redirections. An attacker who successfully exploited this vulnerability could obtain information to further compromise the user's system\u003c/p\u003e\n\u003cp\u003eTo exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application that could exploit the vulnerability.\u003c/p\u003e\n\u003cp\u003eThe security update addresses the vulnerability by correcting how Windows Projected Filesystem handle file redirections.\u003c/p\u003e","severity":{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C","level":"medium","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-09","score":0.01079,"percentile":0.65299,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2020-09-11T17:08:49Z","modified":"2026-06-17T02:58:11Z","products":[{"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 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-2020-16879","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-16879"},{"url":"https://github.com/advisories/GHSA-32xq-w4g5-fj4x"}],"sources":{"cve":[{"id":"CVE-2020-16879","title":"Projected Filesystem Information Disclosure Vulnerability","description":"\u003cp\u003eAn information disclosure vulnerability exists when a Windows Projected Filesystem improperly handles file redirections. An attacker who successfully exploited this vulnerability could obtain information to further compromise the user's system\u003c/p\u003e\n\u003cp\u003eTo exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application that could exploit the vulnerability.\u003c/p\u003e\n\u003cp\u003eThe security update addresses the vulnerability by correcting how Windows Projected Filesystem handle file redirections.\u003c/p\u003e","status":"published","published":"2020-09-11T17:08:49Z","modified":"2024-10-01T15:57:23.55Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C","level":"medium","assessor":"cna"}],"updated_at":"2026-11-02T14:35:59.116379Z"}],"euvd":[{"id":"EUVD-2020-8837","description":"\u003cp\u003eAn information disclosure vulnerability exists when a Windows Projected Filesystem improperly handles file redirections. An attacker who successfully exploited this vulnerability could obtain information to further compromise the user's system\u003c/p\u003e\n\u003cp\u003eTo exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application that could exploit the vulnerability.\u003c/p\u003e\n\u003cp\u003eThe security update addresses the vulnerability by correcting how Windows Projected Filesystem handle file redirections.\u003c/p\u003e","status":"published","published":"2020-09-11T17:08:49Z","modified":"2024-10-01T15:57:23Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N/E:P/RL:O/RC:C","level":"medium"}],"updated_at":"2026-11-03T00:28:01.48056Z"}],"ghsa":[{"id":"GHSA-32xq-w4g5-fj4x","title":"An information disclosure vulnerability exists when a Windows Projected Filesystem improperly...","description":"An information disclosure vulnerability exists when a Windows Projected Filesystem improperly handles file redirections, aka 'Projected Filesystem Information Disclosure Vulnerability'.","status":"published","published":"2022-05-24T17:28:07Z","modified":"2024-01-09T05:05:18Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:55:22.44362Z"}],"nvd":[{"id":"CVE-2020-16879","description":"\u003cp\u003eAn information disclosure vulnerability exists when a Windows Projected Filesystem improperly handles file redirections. An attacker who successfully exploited this vulnerability could obtain information to further compromise the user's system\u003c/p\u003e\n\u003cp\u003eTo exploit this vulnerability, an attacker would first have to log on to the system. An attacker could then run a specially crafted application that could exploit the vulnerability.\u003c/p\u003e\n\u003cp\u003eThe security update addresses the vulnerability by correcting how Windows Projected Filesystem handle file redirections.\u003c/p\u003e","status":"published","published":"2020-09-11T17:15:17.637Z","modified":"2026-06-17T02:58:11.157Z","cvss":[{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"secondary"},{"version":"3.1","score":5.5,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:N/A:N","level":"medium","assessor":"secondary"},{"version":"2.0","score":2.1,"vector":"AV:L/AC:L/Au:N/C:P/I:N/A:N","level":"low","assessor":"primary"}],"updated_at":"2026-11-02T14:06:14.981587Z"}]}}