{"id":"CVE-2024-21338","title":"Windows Kernel Elevation of Privilege Vulnerability","summary":"Windows Kernel 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","cwe":["CWE-822"],"vendor":"microsoft","product":"windows_10_1809","affected":["windows_10_1809 < 10.0.17763.5458","windows_10_21h2 < 10.0.19044.4046","windows_10_22h2 < 10.0.19045.4046","windows_11_21h2 < 10.0.22000.2777","windows_11_22h2 < 10.0.22621.3155","windows_11_23h2 < 10.0.22631.3155","windows_server_2019 < 10.0.17763.5458","windows_server_2022 < 10.0.20348.2322","windows_server_2022_23h2 <= 10.0.25398.709"],"patched":["windows_10_1809 10.0.17763.5458","windows_10_21h2 10.0.19044.4046","windows_10_22h2 10.0.19045.4046","windows_11_21h2 10.0.22000.2777","windows_11_22h2 10.0.22621.3155","windows_11_23h2 10.0.22631.3155","windows_server_2019 10.0.17763.5458","windows_server_2022 10.0.20348.2322"],"published":"2024-02-13","updated":"2026-07-31","source":"NVD","sourceUrl":"https://nvd.nist.gov/vuln/detail/CVE-2024-21338","references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21338","label":"secure@microsoft.com"},{"url":"https://decoded.avast.io/janvojtesek/lazarus-and-the-fudmodule-rootkit-beyond-byovd-with-an-admin-to-kernel-zero-day/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21338","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://packetstorm.news/files/id/190586/","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.exploit-db.com/exploits/52275","label":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-21338","label":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"tags":["nvd","kev","in-the-wild","exploit-available"],"epss":0.5981,"epssPercentile":0.99112,"kev":true,"kevDateAdded":"2024-03-04","kevDueDate":"2024-03-25","kevRansomware":true,"exploited":true,"exploitAvailable":true,"zeroDay":true,"ingestedAt":"2026-07-31T04:58:34.503Z","exploits":{"exploitdb":true,"github":8,"githubRepos":["https://github.com/hakaioffsec/CVE-2024-21338","https://github.com/UMU618/CVE-2024-21338","https://github.com/wusijie/CVE-2024-21338-1"],"checkedAt":"2026-09-21T15:26:17.959Z"},"slug":"CVE-2024-21338","body":"## Overview\n\nWindows Kernel Elevation of Privilege Vulnerability\n\n## Affected\n\n- `windows_10_1809 < 10.0.17763.5458`\n- `windows_10_21h2 < 10.0.19044.4046`\n- `windows_10_22h2 < 10.0.19045.4046`\n- `windows_11_21h2 < 10.0.22000.2777`\n- `windows_11_22h2 < 10.0.22621.3155`\n- `windows_11_23h2 < 10.0.22631.3155`\n- `windows_server_2019 < 10.0.17763.5458`\n- `windows_server_2022 < 10.0.20348.2322`\n- `windows_server_2022_23h2 <= 10.0.25398.709`\n\n## Remediation\n\nUpgrade past the affected range:\n\n- `windows_10_1809 10.0.17763.5458`\n- `windows_10_21h2 10.0.19044.4046`\n- `windows_10_22h2 10.0.19045.4046`\n- `windows_11_21h2 10.0.22000.2777`\n- `windows_11_22h2 10.0.22621.3155`\n- `windows_11_23h2 10.0.22631.3155`\n- `windows_server_2019 10.0.17763.5458`\n- `windows_server_2022 10.0.20348.2322`","depth":"abyssal","depthScore":85,"depthScoreParts":{"impact":42.9,"likelihood":12,"exploitation":25,"ransomware":5},"changes":[]}