{"id":"CVE-2021-33772","title":"Windows TCP/IP Driver Denial of Service Vulnerability","summary":"Windows TCP/IP Driver Denial of Service Vulnerability","severity":"high","cvss":7.5,"cvssVector":"CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:N/I:N/A:H","vendor":"microsoft","product":"windows_10","affected":["windows_10 = 20h2","windows_10 = 21h1","windows_10 = 2004","windows_server_2016 = 20h2","windows_server_2016 = 2004"],"published":"2021-07-14","updated":"2026-08-10","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2021-33772","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2021-33772","label":"secure@microsoft.com"},{"url":"https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-33772","label":"af854a3a-2127-422b-91ae-364da2661108"}],"tags":["nvd"],"epss":0.03253,"epssPercentile":0.87797,"ingestedAt":"2026-08-10T16:41:15.571Z","slug":"CVE-2021-33772","body":"## Overview\n\nWindows TCP/IP Driver Denial of Service Vulnerability\n\n## Affected\n\n- `windows_10 = 20h2`\n- `windows_10 = 21h1`\n- `windows_10 = 2004`\n- `windows_server_2016 = 20h2`\n- `windows_server_2016 = 2004`\n\n## Remediation\n\nRefer to the linked advisories for vendor-supplied fixes and affected version ranges.","depth":"twilight","depthScore":42,"depthScoreParts":{"impact":41.3,"likelihood":0.7,"exploitation":0,"ransomware":0},"changes":[]}