What happened
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.
Affected versions
Windows: See original advisory Fixed: See vendor advisory.
Why it matters
This source correlation may provide earlier visibility while structured CVE metadata is still being updated.
Detection & mitigation
- Review the original advisory and validate affected versions.
- Apply vendor-provided updates or mitigations when available.
Public PoC references
RepositoryAuthorFirst seenReference
Exploit-DB 51946Microsoft Windows 10.0.17763.5458 - Kernel Privilege EscalationE1 Coders2024-04-02VerifiedExploit-DB 52275Microsoft Windows 11 - Kernel Privilege EscalationMilad karimi2025-04-22VerifiedSploituskcfg bypass example demonstrating the configuration bypass for CVE-2024-21338.KitPloit2026-09-23T21:38:00Candidatekitploit.comkcfg bypass example demonstrating the configuration bypass for CVE-2024-21338.zh2026-09-23T21:38:00CandidatePoC-in-GitHub · hakaioffsec/CVE-2024-21338Local Privilege Escalation from Admin to Kernel vulnerability on Windows 10 and Windows 11 operating systems with HVCI enabled.★ 332hakaioffsec2024-04-13CandidatePoC-in-GitHub · UMU618/CVE-2024-21338Fork of https://github.com/hakaioffsec/CVE-2024-21338★ 2UMU6182024-04-17CandidatePoC-in-GitHub · wusijie/CVE-2024-21338-1PoC for the Untrusted Pointer Dereference in the appid.sys driver★ 2wusijie2024-05-05CandidatePoC-in-GitHub · Zombie-Kaiser/CVE-2024-21338-x64-build-Local Privilege Escalation from Admin to Kernel vulnerability on Windows 10 and Windows 11 operating systems with HVCI enabled.★ 7Zombie-Kaiser2024-05-18CandidatePoC-in-GitHub · tykawaii98/CVE-2024-21338_PoC★ 40tykawaii982024-06-23CandidatePoC-in-GitHub · Crowdfense/CVE-2024-21338Windows AppLocker Driver (appid.sys) LPE★ 81Crowdfense2024-07-29CandidatePoC-in-GitHub · hackyboiz/kcfg-bypasskcfg bypass example - CVE-2024-21338★ 2hackyboiz2025-01-12CandidatePoC-in-GitHub · MistyFir/CVE-2024-21338-Exploit★ 8MistyFir2026-03-11CandidatePoC-in-GitHub · kikozz/CVE-2024-21338★ 0kikozz2026-09-30CandidateSource timeline
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Record history
Record created from the first normalized source observation.
Metadata and source references refreshed.