Windows Kernel Elevation of Privilege Vulnerability
Published 2024-02-13 18:15:49
Updated 2024-04-11 20:15:20
View at NVD,   CVE.org
Vulnerability category: Gain privilege

CVE-2024-21338 is in the CISA Known Exploited Vulnerabilities Catalog

CISA vulnerability name:
Microsoft Windows Kernel Exposed IOCTL with Insufficient Access Control Vulnerability
CISA required action:
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
CISA 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.
Notes:
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21338
Added on 2024-03-04 Action due date 2024-03-25

Exploit prediction scoring system (EPSS) score for CVE-2024-21338

Probability of exploitation activity in the next 30 days: 0.11%

Percentile, the proportion of vulnerabilities that are scored at or less: ~ 44 % EPSS Score History EPSS FAQ

CVSS scores for CVE-2024-21338

Base Score Base Severity CVSS Vector Exploitability Score Impact Score Score Source
7.8
HIGH CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
1.8
5.9
Microsoft Corporation
7.8
HIGH CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/...
N/A
N/A
MS-CVE-2024-21338

CWE ids for CVE-2024-21338

  • The product obtains a value from an untrusted source, converts this value to a pointer, and dereferences the resulting pointer.
    Assigned by: secure@microsoft.com (Secondary)

References for CVE-2024-21338

Products affected by CVE-2024-21338

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