{"id":"CVE-2020-16957","aliases":["EUVD-2020-8915","GHSA-7ch6-cg9m-mgp4"],"status":"published","title":"Microsoft Office Access Connectivity Engine Remote Code Execution Vulnerability","description":"\u003cp\u003eA remote code execution vulnerability exists when the Microsoft Office Access Connectivity Engine improperly handles objects in memory. An attacker who successfully exploited this vulnerability could execute arbitrary code on a victim system.\u003c/p\u003e\n\u003cp\u003eAn attacker could exploit this vulnerability by enticing a victim to open a specially crafted file.\u003c/p\u003e\n\u003cp\u003eThe update addresses the vulnerability by correcting the way the Microsoft Office Access Connectivity Engine handles objects in memory.\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":0.03871,"percentile":0.90288,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2020-10-16T22:18:05Z","modified":"2026-06-17T02:58:21Z","products":[{"vendor":"microsoft","product":"365_apps"},{"vendor":"microsoft","product":"microsoft 365 apps for enterprise"},{"vendor":"microsoft","product":"microsoft office 2019"},{"vendor":"microsoft","product":"office"}],"references":[{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2020-16957","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2020-16957"},{"url":"https://github.com/advisories/GHSA-7ch6-cg9m-mgp4"}],"sources":{"cve":[{"id":"CVE-2020-16957","title":"Microsoft Office Access Connectivity Engine Remote Code Execution Vulnerability","description":"\u003cp\u003eA remote code execution vulnerability exists when the Microsoft Office Access Connectivity Engine improperly handles objects in memory. An attacker who successfully exploited this vulnerability could execute arbitrary code on a victim system.\u003c/p\u003e\n\u003cp\u003eAn attacker could exploit this vulnerability by enticing a victim to open a specially crafted file.\u003c/p\u003e\n\u003cp\u003eThe update addresses the vulnerability by correcting the way the Microsoft Office Access Connectivity Engine handles objects in memory.\u003c/p\u003e","status":"published","published":"2020-10-16T22:18:05Z","modified":"2024-08-04T13:45:34.8Z","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":"2026-11-02T14:35:58.787905Z"}],"euvd":[{"id":"EUVD-2020-8915","description":"\u003cp\u003eA remote code execution vulnerability exists when the Microsoft Office Access Connectivity Engine improperly handles objects in memory. An attacker who successfully exploited this vulnerability could execute arbitrary code on a victim system.\u003c/p\u003e\n\u003cp\u003eAn attacker could exploit this vulnerability by enticing a victim to open a specially crafted file.\u003c/p\u003e\n\u003cp\u003eThe update addresses the vulnerability by correcting the way the Microsoft Office Access Connectivity Engine handles objects in memory.\u003c/p\u003e","status":"published","published":"2020-10-16T22:18:05Z","modified":"2024-08-04T13:45:34Z","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":"2026-11-03T03:07:27.538796Z"}],"ghsa":[{"id":"GHSA-7ch6-cg9m-mgp4","title":"A remote code execution vulnerability exists when the Microsoft Office Access Connectivity Engine...","description":"A remote code execution vulnerability exists when the Microsoft Office Access Connectivity Engine improperly handles objects in memory, aka 'Microsoft Office Access Connectivity Engine Remote Code Execution Vulnerability'.","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"}],"updated_at":"2026-11-02T14:55:18.712206Z"}],"nvd":[{"id":"CVE-2020-16957","description":"\u003cp\u003eA remote code execution vulnerability exists when the Microsoft Office Access Connectivity Engine improperly handles objects in memory. An attacker who successfully exploited this vulnerability could execute arbitrary code on a victim system.\u003c/p\u003e\n\u003cp\u003eAn attacker could exploit this vulnerability by enticing a victim to open a specially crafted file.\u003c/p\u003e\n\u003cp\u003eThe update addresses the vulnerability by correcting the way the Microsoft Office Access Connectivity Engine handles objects in memory.\u003c/p\u003e","status":"published","published":"2020-10-16T23:15:16.587Z","modified":"2026-06-17T02:58:21.16Z","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":9.3,"vector":"AV:N/AC:M/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T14:06:19.351389Z"}]}}