{"id":"CVE-2021-34464","aliases":["EUVD-2021-21119","GHSA-xcjg-3wp4-wv26"],"status":"published","title":"Microsoft Defender Remote Code Execution Vulnerability","description":"Microsoft Defender Remote Code Execution Vulnerability","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:U/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.02643,"percentile":0.85787,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2021-07-16T20:19:52Z","modified":"2026-08-10T18:30:50Z","products":[{"vendor":"microsoft","product":"malware_protection_engine"},{"vendor":"microsoft","product":"microsoft malware protection engine"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-34464","tags":["vendor-advisory","patch"]},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-34464","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-34464"},{"url":"https://github.com/advisories/GHSA-xcjg-3wp4-wv26"}],"sources":{"cve":[{"id":"CVE-2021-34464","title":"Microsoft Defender Remote Code Execution Vulnerability","description":"Microsoft Defender Remote Code Execution Vulnerability","status":"published","published":"2021-07-16T20:19:52Z","modified":"2026-08-10T15:11:59.83Z","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:U/RL:O/RC:C","level":"high","assessor":"cna"}],"updated_at":"2026-11-02T14:33:11.59359Z"}],"euvd":[{"id":"EUVD-2021-21119","description":"Microsoft Defender Remote Code Execution Vulnerability","status":"published","published":"2021-07-16T20:19:52Z","modified":"2026-08-10T15:11:59Z","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:U/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-02T18:02:03.704262Z"}],"ghsa":[{"id":"GHSA-xcjg-3wp4-wv26","title":"Microsoft Defender Remote Code Execution Vulnerability This CVE ID is unique from CVE-2021-34522.","description":"Microsoft Defender Remote Code Execution Vulnerability This CVE ID is unique from CVE-2021-34522.","status":"published","published":"2022-05-24T19:08:14Z","modified":"2026-08-10T18:30:50Z","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":"2026-11-02T15:10:14.704025Z"}],"nvd":[{"id":"CVE-2021-34464","description":"Microsoft Defender Remote Code Execution Vulnerability","status":"published","published":"2021-07-16T21:15:10.04Z","modified":"2026-08-10T16:17:47.99Z","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":"2026-11-02T14:06:55.747384Z"}]}}