{"id":"CVE-2020-16955","aliases":["EUVD-2020-8913","GHSA-hfw2-mqmp-j26q"],"status":"published","title":"Microsoft Office Click-to-Run Elevation of Privilege Vulnerability","description":"\u003cp\u003eAn elevation of privilege vulnerability exists in the way that Microsoft Office Click-to-Run (C2R) AppVLP handles certain files. An attacker who successfully exploited the vulnerability could elevate privileges.\u003c/p\u003e\n\u003cp\u003eTo exploit this vulnerability, an attacker would need to convince a user to open a specially crafted file.\u003c/p\u003e\n\u003cp\u003eThe security update addresses the vulnerability by correcting how Microsoft Office Click-to-Run (C2R) components handle these files.\u003c/p\u003e","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.03482,"percentile":0.89214,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-20"],"published":"2020-10-16T22:18:05Z","modified":"2026-06-17T02:58:20Z","products":[{"vendor":"microsoft","product":"365_apps"},{"vendor":"microsoft","product":"microsoft 365 apps for enterprise"},{"vendor":"microsoft","product":"microsoft office 2013 click-to-run (c2r)"},{"vendor":"microsoft","product":"microsoft office 2019"},{"vendor":"microsoft","product":"office"}],"references":[{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16955","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-16955"},{"url":"https://github.com/advisories/GHSA-hfw2-mqmp-j26q"}],"sources":{"cve":[{"id":"CVE-2020-16955","title":"Microsoft Office Click-to-Run Elevation of Privilege Vulnerability","description":"\u003cp\u003eAn elevation of privilege vulnerability exists in the way that Microsoft Office Click-to-Run (C2R) AppVLP handles certain files. An attacker who successfully exploited the vulnerability could elevate privileges.\u003c/p\u003e\n\u003cp\u003eTo exploit this vulnerability, an attacker would need to convince a user to open a specially crafted file.\u003c/p\u003e\n\u003cp\u003eThe security update addresses the vulnerability by correcting how Microsoft Office Click-to-Run (C2R) components handle these files.\u003c/p\u003e","status":"published","published":"2020-10-16T22:18:05Z","modified":"2024-11-15T16:55:38.851Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C","level":"high","assessor":"cna"}],"updated_at":"2026-11-02T14:35:59.116379Z"}],"euvd":[{"id":"EUVD-2020-8913","description":"\u003cp\u003eAn elevation of privilege vulnerability exists in the way that Microsoft Office Click-to-Run (C2R) AppVLP handles certain files. An attacker who successfully exploited the vulnerability could elevate privileges.\u003c/p\u003e\n\u003cp\u003eTo exploit this vulnerability, an attacker would need to convince a user to open a specially crafted file.\u003c/p\u003e\n\u003cp\u003eThe security update addresses the vulnerability by correcting how Microsoft Office Click-to-Run (C2R) components handle these files.\u003c/p\u003e","status":"published","published":"2020-10-16T22:18:05Z","modified":"2024-11-15T16:55:38Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-03T00:04:59.542658Z"}],"ghsa":[{"id":"GHSA-hfw2-mqmp-j26q","title":"An elevation of privilege vulnerability exists in the way that Microsoft Office Click-to-Run (C2R...","description":"An elevation of privilege vulnerability exists in the way that Microsoft Office Click-to-Run (C2R) AppVLP handles certain files, aka 'Microsoft Office Click-to-Run Elevation of Privilege Vulnerability'. This CVE ID is unique from CVE-2020-16928, CVE-2020-16934.","status":"published","published":"2022-05-24T17:31:01Z","modified":"2023-12-31T21:30:24Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-20"],"updated_at":"2026-11-02T14:55:18.712206Z"}],"nvd":[{"id":"CVE-2020-16955","description":"\u003cp\u003eAn elevation of privilege vulnerability exists in the way that Microsoft Office Click-to-Run (C2R) AppVLP handles certain files. An attacker who successfully exploited the vulnerability could elevate privileges.\u003c/p\u003e\n\u003cp\u003eTo exploit this vulnerability, an attacker would need to convince a user to open a specially crafted file.\u003c/p\u003e\n\u003cp\u003eThe security update addresses the vulnerability by correcting how Microsoft Office Click-to-Run (C2R) components handle these files.\u003c/p\u003e","status":"published","published":"2020-10-16T23:15:16.477Z","modified":"2026-06-17T02:58:20.94Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/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:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"2.0","score":6.8,"vector":"AV:N/AC:M/Au:N/C:P/I:P/A:P","level":"medium","assessor":"primary"}],"updated_at":"2026-11-02T14:06:19.351389Z"}]}}