{"id":"CVE-2024-21338","url":"https://www.cyber-defence.io/tools/cve/CVE-2024-21338","generatedAt":"2026-10-31T09:14:17.148Z","title":"Microsoft Windows Kernel Exposed IOCTL with Insufficient Access Control Vulnerability","description":"Windows Kernel Elevation of Privilege Vulnerability","published":"2024-02-13T18:15:49.000Z","lastModified":"2026-08-10T16:18:40.000Z","status":"Analyzed","sourceIdentifier":"secure@microsoft.com","cvss":{"version":"3.1","score":7.8,"severity":"HIGH","vector":"CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H"},"cwe":["CWE-822"],"affected":["microsoft/windows 10 1809","microsoft/windows 10 21h2","microsoft/windows 10 22h2","microsoft/windows 11 21h2","microsoft/windows 11 22h2","microsoft/windows 11 23h2","microsoft/windows server 2019","microsoft/windows server 2022","microsoft/windows server 2022 23h2"],"epss":{"score":0.5981,"percentile":0.99129,"date":"2026-10-30","history":[]},"kev":{"listed":true,"dateAdded":"2024-03-04","dueDate":"2024-03-25","knownRansomwareCampaignUse":"Known","notes":"Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.\nhttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21338; https://nvd.nist.gov/vuln/detail/CVE-2024-21338"},"exploits":{"count":2,"verified":false,"firstPublished":"2024-04-02","source":"Exploit-DB (https://gitlab.com/exploit-database/exploitdb)","entries":[{"edbId":52275,"kind":"exploit","title":"Microsoft Windows 11 - Kernel Privilege Escalation","url":"https://www.exploit-db.com/exploits/52275","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/windows/local/52275.c","file":"exploits/windows/local/52275.c","published":"2025-04-22","added":"2025-04-22","updated":"2025-04-22","author":"Milad karimi","type":"local","platform":"windows","port":null,"verified":false,"codes":["CVE-2024-21338"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":null},{"edbId":51946,"kind":"exploit","title":"Microsoft Windows 10.0.17763.5458 - Kernel Privilege Escalation","url":"https://www.exploit-db.com/exploits/51946","sourceUrl":"https://gitlab.com/exploit-database/exploitdb/-/blob/main/exploits/windows/local/51946.rb","file":"exploits/windows/local/51946.rb","published":"2024-04-02","added":"2024-04-02","updated":"2024-04-02","author":"E1 Coders","type":"local","platform":"windows","port":null,"verified":false,"codes":["CVE-2024-21338"],"tags":null,"aliases":null,"applicationUrl":null,"screenshotUrl":null,"referenceUrl":null}]},"verdict":{"level":"urgent","text":"Known to be exploited in the wild (CISA KEV, CISA remediation deadline 25 March 2024). Treat as an emergency change: patch or isolate now, then hunt for prior compromise."},"changes":[],"references":[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21338","tags":["Patch","Vendor Advisory"],"source":"secure@microsoft.com"},{"url":"https://decoded.avast.io/janvojtesek/lazarus-and-the-fudmodule-rootkit-beyond-byovd-with-an-admin-to-kernel-zero-day/","tags":["Exploit","Technical Description","Third Party Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21338","tags":["Patch","Vendor Advisory"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://packetstorm.news/files/id/190586/","tags":["Exploit","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.exploit-db.com/exploits/52275","tags":["Exploit","VDB Entry"],"source":"af854a3a-2127-422b-91ae-364da2661108"},{"url":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-21338","tags":["US Government Resource"],"source":"134c704f-9b21-4f2e-91b3-4a467353bcc0"}],"sources":{"nvd":"https://nvd.nist.gov/vuln/detail/CVE-2024-21338","epss":"https://www.first.org/epss/","kev":"https://www.cisa.gov/known-exploited-vulnerabilities-catalog","exploitdb":"https://www.exploit-db.com/"},"licence":"CC BY 4.0 — link back to the CVE Explorer if you publish the results; upstream data remains subject to its own terms."}