{"id":"CVE-2021-31985","aliases":["EUVD-2021-18857","GHSA-jjcr-9wm8-qgr3"],"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":"2026-11-10","score":0.07764,"percentile":0.94687,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2021-06-08T22:46:42Z","modified":"2026-06-17T03:52:38Z","products":[{"vendor":"microsoft","product":"malware_protection_engine"},{"vendor":"microsoft","product":"microsoft malware protection engine"}],"references":[{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31985","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"http://packetstormsecurity.com/files/163443/MpEngine-ASProtect-Embedded-Runtime-DLL-Memory-Corruption.html","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-31985"},{"url":"https://github.com/advisories/GHSA-jjcr-9wm8-qgr3"}],"sources":{"cve":[{"id":"CVE-2021-31985","title":"Microsoft Defender Remote Code Execution Vulnerability","description":"Microsoft Defender Remote Code Execution Vulnerability","status":"published","published":"2021-06-08T22:46:42Z","modified":"2024-08-03T23:10:31.407Z","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":"2026-11-02T14:33:05.665371Z"}],"euvd":[{"id":"EUVD-2021-18857","description":"Microsoft Defender Remote Code Execution Vulnerability","status":"published","published":"2021-06-08T22:46:42Z","modified":"2024-08-03T23:10:31Z","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":"2026-11-03T03:24:37.407491Z"}],"ghsa":[{"id":"GHSA-jjcr-9wm8-qgr3","title":"Microsoft Defender Remote Code Execution Vulnerability","description":"Microsoft Defender Remote Code Execution Vulnerability","status":"published","published":"2022-05-24T19:04:45Z","modified":"2023-01-29T05:06:57Z","cvss":[{"version":"3.1","score":8.8,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high"}],"updated_at":"2026-11-02T14:46:07.768849Z"}],"nvd":[{"id":"CVE-2021-31985","description":"Microsoft Defender Remote Code Execution Vulnerability","status":"published","published":"2021-06-08T23:15:09.467Z","modified":"2026-06-17T03:52:38.187Z","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":8.8,"vector":"CVSS:3.1/AV:N/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":"2026-11-02T14:06:54.439974Z"}]}}