{"id":"CVE-2021-33774","title":"Windows Event Tracing Elevation of Privilege Vulnerability","summary":"Windows Event Tracing Elevation of Privilege Vulnerability","severity":"high","cvss":7,"cvssVector":"CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:U/C:H/I:H/A:H","vendor":"microsoft","product":"windows_10","affected":["windows_10 = 20h2","windows_10 = 21h1","windows_10 = 1809","windows_10 = 1909","windows_10 = 2004","windows_server_2016 = 20h2","windows_server_2016 = 2004","windows_server_2019"],"published":"2021-07-14","updated":"2026-08-10","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2021-33774","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-33774","label":"secure@microsoft.com"},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-33774","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd"],"epss":0.00633,"epssPercentile":0.48945,"ingestedAt":"2026-08-10T16:41:15.635Z","slug":"CVE-2021-33774","body":"## Overview\n\nWindows Event Tracing Elevation of Privilege Vulnerability\n\n## Affected\n\n- `windows_10 = 20h2`\n- `windows_10 = 21h1`\n- `windows_10 = 1809`\n- `windows_10 = 1909`\n- `windows_10 = 2004`\n- `windows_server_2016 = 20h2`\n- `windows_server_2016 = 2004`\n- `windows_server_2019`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":39,"depthScoreParts":{"impact":38.5,"likelihood":0.1,"exploitation":0,"ransomware":0},"changes":[]}