{"id":"CVE-2021-36948","title":"Windows Update Medic Service Elevation of Privilege Vulnerability","summary":"Windows Update Medic Service Elevation of Privilege Vulnerability","severity":"high","cvss":7.8,"cvssVector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","vendor":"microsoft","product":"windows_10_1809","affected":["windows_10_1809 < 10.0.17763.2114","windows_10_1909 < 10.0.18363.1734","windows_10_2004 < 10.0.19041.1165","windows_10_20h2 < 10.0.19042.1165","windows_10_21h1 < 10.0.19043.1165","windows_server_2004 < 10.0.19041.1165","windows_server_2019 < 10.0.17763.2114","windows_server_20h2 < 10.0.19042.1165"],"patched":["windows_10_1809 10.0.17763.2114","windows_10_1909 10.0.18363.1734","windows_10_2004 10.0.19041.1165","windows_10_20h2 10.0.19042.1165","windows_10_21h1 10.0.19043.1165","windows_server_2004 10.0.19041.1165","windows_server_2019 10.0.17763.2114","windows_server_20h2 10.0.19042.1165"],"published":"2021-08-12","updated":"2026-08-10","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2021-36948","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-36948","label":"secure@microsoft.com"},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-36948","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2021-36948","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","kev","in-the-wild"],"epss":0.2327,"epssPercentile":0.97716,"kev":true,"kevDateAdded":"2021-11-03","kevDueDate":"2021-11-17","kevRansomware":false,"exploited":true,"zeroDay":true,"ingestedAt":"2026-08-11T16:47:01.175Z","slug":"CVE-2021-36948","body":"## Overview\n\nWindows Update Medic Service Elevation of Privilege Vulnerability\n\n## Affected\n\n- `windows_10_1809 < 10.0.17763.2114`\n- `windows_10_1909 < 10.0.18363.1734`\n- `windows_10_2004 < 10.0.19041.1165`\n- `windows_10_20h2 < 10.0.19042.1165`\n- `windows_10_21h1 < 10.0.19043.1165`\n- `windows_server_2004 < 10.0.19041.1165`\n- `windows_server_2019 < 10.0.17763.2114`\n- `windows_server_20h2 < 10.0.19042.1165`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `windows_10_1809 10.0.17763.2114`\n- `windows_10_1909 10.0.18363.1734`\n- `windows_10_2004 10.0.19041.1165`\n- `windows_10_20h2 10.0.19042.1165`\n- `windows_10_21h1 10.0.19043.1165`\n- `windows_server_2004 10.0.19041.1165`\n- `windows_server_2019 10.0.17763.2114`\n- `windows_server_20h2 10.0.19042.1165`","depth":"abyssal","depthScore":73,"depthScoreParts":{"impact":42.9,"likelihood":4.7,"exploitation":25,"ransomware":0},"changes":[]}