CVE-2024-21338

unknown KEV

Published 2024-03-04 · Modified 2024-03-04

CVSS v3

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CVSS v2

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VIR risk

1.5

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.

CISA KEV

Vendor: Microsoft
Product: Windows
Due date: 2024-03-25

Predictions

Exploit likelihood

99%

Patch ETA

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Heuristic predictions, AS-IS, for prioritization only.

Mitigations

vendor Authored 2026-05-27

Vendor advisory: cisa-kev — https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21338; https://nvd.nist.gov/vuln/detail/CVE-2024-21338

Exploits

References

https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21338; https://nvd.nist.gov/vuln/detail/CVE-2024-21338

Verify integrity in audit chain (admin only). AS-IS.