{"id":"CVE-2024-21338","aliases":["EUVD-2024-19050","GHSA-jqrq-gqwg-r8r5"],"status":"published","title":"Windows Kernel Elevation of Privilege Vulnerability","description":"Windows Kernel Elevation of Privilege Vulnerability","severity":{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C","level":"high","assessor":"cna","from":"cve"},"epss":{"day":"2026-11-11","score":0.62209,"percentile":0.99194,"model":"v2026.06.15"},"facts":{"in_kev":true,"known_exploited":true,"public_exploit":true,"fix_available":false},"cwes":["CWE-822"],"published":"2024-02-13T18:02:09Z","modified":"2026-08-10T17:52:20Z","kev":{"date_added":"2024-03-04","due_date":"2024-03-25","required_action":"Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.","known_ransomware_use":"Known"},"exploitation":[{"source":"euvd","since":"2024-03-04"},{"source":"kev","since":"2024-03-04"}],"exploits":[{"source":"exploitdb","id":"EDB-51946","title":"Microsoft Windows 10.0.17763.5458 - 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Kernel Privilege Escalation","type":"local","platform":"windows","date":"2025-04-22","url":"https://www.exploit-db.com/exploits/52275"},{"source":"pocgithub","id":"MistyFir/CVE-2024-21338-Exploit","title":"MistyFir/CVE-2024-21338-Exploit","date":"2026-03-11","url":"https://github.com/MistyFir/CVE-2024-21338-Exploit"}],"products":[{"vendor":"microsoft","product":"windows"},{"vendor":"microsoft","product":"windows 10 version 1809"},{"vendor":"microsoft","product":"windows 10 version 21h2"},{"vendor":"microsoft","product":"windows 10 version 22h2"},{"vendor":"microsoft","product":"windows 11 version 21h2"},{"vendor":"microsoft","product":"windows 11 version 22h2"},{"vendor":"microsoft","product":"windows 11 version 22h3"},{"vendor":"microsoft","product":"windows 11 version 23h2"},{"vendor":"microsoft","product":"windows server 2019"},{"vendor":"microsoft","product":"windows server 2019 (server core installation)"},{"vendor":"microsoft","product":"windows server 2022"},{"vendor":"microsoft","product":"windows server 2022, 23h2 edition (server core installation)"},{"vendor":"microsoft","product":"windows_10_1809"},{"vendor":"microsoft","product":"windows_10_21h2"},{"vendor":"microsoft","product":"windows_10_22h2"},{"vendor":"microsoft","product":"windows_11_21h2"},{"vendor":"microsoft","product":"windows_11_22h2"},{"vendor":"microsoft","product":"windows_11_23h2"},{"vendor":"microsoft","product":"windows_server_2019"},{"vendor":"microsoft","product":"windows_server_2022"},{"vendor":"microsoft","product":"windows_server_2022_23h2"}],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21338","tags":["vendor-advisory","patch","x_transferred","Patch","Vendor Advisory"]},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-21338","tags":["government-resource","US Government Resource"]},{"url":"https://www.exploit-db.com/exploits/52275","tags":["Exploit","VDB Entry"]},{"url":"https://packetstorm.news/files/id/190586/","tags":["Exploit","VDB Entry"]},{"url":"https://decoded.avast.io/janvojtesek/lazarus-and-the-fudmodule-rootkit-beyond-byovd-with-an-admin-to-kernel-zero-day/","tags":["x_transferred","Exploit","Technical Description","Third Party Advisory"]},{"url":"https://nvd.nist.gov/vuln/detail/CVE-2024-21338"},{"url":"https://decoded.avast.io/janvojtesek/lazarus-and-the-fudmodule-rootkit-beyond-byovd-with-an-admin-to-kernel-zero-day"},{"url":"https://packetstorm.news/files/id/190586"},{"url":"https://github.com/advisories/GHSA-jqrq-gqwg-r8r5"}],"sources":{"cve":[{"id":"CVE-2024-21338","title":"Windows Kernel Elevation of Privilege Vulnerability","description":"Windows Kernel Elevation of Privilege Vulnerability","status":"published","published":"2024-02-13T18:02:09.738Z","modified":"2026-08-10T17:52:20.424Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C","level":"high","assessor":"cna"}],"cwes":["CWE-822"],"updated_at":"2026-11-02T14:34:05.077718Z"}],"euvd":[{"id":"EUVD-2024-19050","description":"Windows Kernel Elevation of Privilege Vulnerability","status":"published","published":"2024-02-13T18:02:09Z","modified":"2026-08-10T17:52:20Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C","level":"high"}],"exploited_since":"2024-03-04","updated_at":"2026-11-02T18:02:01.58399Z"}],"ghsa":[{"id":"GHSA-jqrq-gqwg-r8r5","title":"Windows Kernel Elevation of Privilege Vulnerability","description":"Windows Kernel Elevation of Privilege Vulnerability","status":"published","published":"2024-02-13T18:38:23Z","modified":"2025-10-22T00:32:59Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high"}],"cwes":["CWE-822"],"updated_at":"2026-11-02T15:04:07.112106Z"}],"kev":[{"id":"CVE-2024-21338","title":"Microsoft Windows Kernel Exposed IOCTL with Insufficient Access Control Vulnerability","description":"Microsoft Windows Kernel contains an exposed IOCTL with insufficient access control vulnerability within the IOCTL (input and output control) dispatcher in appid.sys that allows a local attacker to achieve privilege escalation.","cwes":["CWE-822"],"kev":{"date_added":"2024-03-04","due_date":"2024-03-25","required_action":"Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.","known_ransomware_use":"Known"},"updated_at":"2026-11-02T17:00:16.234141Z"}],"nvd":[{"id":"CVE-2024-21338","description":"Windows Kernel Elevation of Privilege Vulnerability","status":"published","published":"2024-02-13T18:15:49.083Z","modified":"2026-08-10T16:18:40.377Z","cvss":[{"version":"3.1","score":7.8,"vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H","level":"high","assessor":"secondary"}],"cwes":["CWE-822"],"updated_at":"2026-11-02T14:09:35.738752Z"}]}}