{"id":"CVE-2021-31206","aliases":["EUVD-2021-18119","GHSA-636v-jm8j-6hx7"],"status":"published","title":"Microsoft Exchange Server Remote Code Execution Vulnerability","description":"Microsoft Exchange Server Remote Code Execution Vulnerability","severity":{"version":"3.1","score":7.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:L/E:F/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-10","score":0.13006,"percentile":0.96365,"model":"v2026.06.15"},"facts":{"in_kev":false,"known_exploited":false,"public_exploit":false,"fix_available":false},"published":"2021-07-14T17:53:13Z","modified":"2026-08-10T18:31:33Z","products":[{"vendor":"microsoft","product":"exchange_server"},{"vendor":"microsoft","product":"microsoft exchange server 2013 cumulative update 23"},{"vendor":"microsoft","product":"microsoft exchange server 2016 cumulative update 20"},{"vendor":"microsoft","product":"microsoft exchange server 2016 cumulative update 21"},{"vendor":"microsoft","product":"microsoft exchange server 2019 cumulative update 10"},{"vendor":"microsoft","product":"microsoft exchange server 2019 cumulative update 9"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-31206","tags":["vendor-advisory","patch"]},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31206","tags":["x_refsource_MISC","x_transferred","Patch","Vendor Advisory"]},{"url":"https://www.zerodayinitiative.com/advisories/ZDI-21-826/","tags":["x_refsource_MISC","x_transferred","Third Party Advisory","VDB Entry"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2021-31206"},{"url":"https://www.zerodayinitiative.com/advisories/ZDI-21-826"},{"url":"https://github.com/advisories/GHSA-636v-jm8j-6hx7"}],"sources":{"cve":[{"id":"CVE-2021-31206","title":"Microsoft Exchange Server Remote Code Execution Vulnerability","description":"Microsoft Exchange Server Remote Code Execution Vulnerability","status":"published","published":"2021-07-14T17:53:13Z","modified":"2026-08-10T15:11:29.455Z","cvss":[{"version":"3.1","score":7.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:L/E:F/RL:O/RC:C","level":"high","assessor":"cna"}],"updated_at":"2026-11-02T14:33:05.665371Z"}],"euvd":[{"id":"EUVD-2021-18119","description":"Microsoft Exchange Server Remote Code Execution Vulnerability","status":"published","published":"2021-07-14T17:53:13Z","modified":"2026-08-10T15:11:29Z","cvss":[{"version":"3.1","score":7.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:L/E:F/RL:O/RC:C","level":"high"}],"updated_at":"2026-11-02T18:02:04.178454Z"}],"ghsa":[{"id":"GHSA-636v-jm8j-6hx7","title":"Microsoft Exchange Server Remote Code Execution Vulnerability This CVE ID is unique from CVE-2021...","description":"Microsoft Exchange Server Remote Code Execution Vulnerability This CVE ID is unique from CVE-2021-31196, CVE-2021-34473.","status":"published","published":"2022-05-24T19:07:57Z","modified":"2026-08-10T18:31:33Z","cvss":[{"version":"3.1","score":7.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:L","level":"high"}],"updated_at":"2026-11-02T15:10:14.704025Z"}],"nvd":[{"id":"CVE-2021-31206","description":"Microsoft Exchange Server Remote Code Execution Vulnerability","status":"published","published":"2021-07-14T18:15:09.497Z","modified":"2026-08-10T16:17:35.383Z","cvss":[{"version":"3.1","score":7.6,"vector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:U/C:H/I:L/A:L","level":"high","assessor":"secondary"},{"version":"3.1","score":8,"vector":"CVSS:3.1/AV:A/AC:L/PR:N/UI:R/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"},{"version":"2.0","score":7.9,"vector":"AV:A/AC:M/Au:N/C:C/I:C/A:C","level":"high","assessor":"primary"}],"updated_at":"2026-11-02T14:06:55.747384Z"}]}}