{"id":"CVE-2021-38646","aliases":[],"url":"https://o3.security/vulnerability/CVE-2021-38646","summary":"Microsoft Office Access Connectivity Engine Remote Code Execution Vulnerability","details":"Microsoft Office Access Connectivity Engine Remote Code Execution Vulnerability","published":"2021-09-15T12:15:15.033","modified":"2026-08-10T19:59:12.030","cvss":{"score":7.8,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H"},"epss":{"score":0.07987,"percentile":0.94305,"asOf":"2026-08-24"},"cisaKev":{"dateAdded":"2022-03-28","dueDate":"2022-04-18","knownRansomwareCampaignUse":true},"exploitsKnown":2,"affectedPackages":[],"fix":null,"references":[{"type":"FIX","url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-38646"},{"type":"FIX","url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-38646"},{"type":"WEB","url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-38646"}],"provenance":{"sources":["OSV.dev","NVD","CISA KEV","FIRST.org (EPSS)"],"lastVerified":"2026-08-10T19:59:12.030"}}