{"id":"CVE-2021-42298","aliases":["EUVD-2021-29273","GHSA-hrr5-6mf9-3wxh"],"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":0.05848,"percentile":0.93276,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"cwes":["CWE-94"],"published":"2021-11-10T00:47:29Z","modified":"2026-08-19T18:32:46Z","products":[{"vendor":"microsoft","product":"malware_protection_engine"},{"vendor":"microsoft","product":"microsoft malware protection engine"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-42298","tags":["vendor-advisory","patch"]},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-42298","tags":["x_refsource_MISC","x_transferred","Mitigation","Patch","Vendor Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-42298"},{"url":"https://github.com/advisories/GHSA-hrr5-6mf9-3wxh"}],"sources":{"cve":[{"id":"CVE-2021-42298","title":"Microsoft Defender Remote Code Execution Vulnerability","description":"Microsoft Defender Remote Code Execution Vulnerability","status":"published","published":"2021-11-10T00:47:29Z","modified":"2026-08-19T16:27:23.871Z","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":"2026-11-02T14:32:58.739039Z"}],"euvd":[{"id":"EUVD-2021-29273","description":"Microsoft Defender Remote Code Execution Vulnerability","status":"published","published":"2021-11-10T00:47:29Z","modified":"2026-08-19T16:27:23Z","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":"2026-11-02T18:01:42.811156Z"}],"ghsa":[{"id":"GHSA-hrr5-6mf9-3wxh","title":"Microsoft Defender Remote Code Execution Vulnerability","description":"Microsoft Defender Remote Code Execution Vulnerability","status":"published","published":"2022-05-24T19:20:21Z","modified":"2026-08-19T18:32:46Z","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-94"],"updated_at":"2026-11-02T15:10:43.503566Z"}],"nvd":[{"id":"CVE-2021-42298","description":"Microsoft Defender Remote Code Execution Vulnerability","status":"published","published":"2021-11-10T01:19:47.477Z","modified":"2026-08-19T17:18:01.657Z","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"}],"cwes":["CWE-94"],"updated_at":"2026-11-02T14:07:00.984108Z"}]}}