CVEvulnerability

CVE-2024-21338

7.8 HIGH Known exploited Published 2024-02-13 Modified 2026-08-10 Official page ↗

CISA Known Exploited Vulnerability

Microsoft Windows Kernel Exposed IOCTL with Insufficient Access Control Vulnerability — Microsoft Windows

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.

Added to KEV
2024-03-04
Remediation due
2024-03-25
Ransomware use
Known
Required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Notes
https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21338; https://nvd.nist.gov/vuln/detail/CVE-2024-21338
Status
Analyzed
Published
2024-02-13
Last modified
2026-08-10
Assigner
[email protected]
CVSS 3.1 ([email protected])
7.8 HIGH — CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-822

Description

Windows Kernel Elevation of Privilege Vulnerability

Affected configurations

• microsoft windows 10 1809 (< 10.0.17763.5458) • microsoft windows 10 21h2 (< 10.0.19044.4046) • microsoft windows 10 22h2 (< 10.0.19045.4046) • microsoft windows 11 21h2 (< 10.0.22000.2777) • microsoft windows 11 22h2 (< 10.0.22621.3155) • microsoft windows 11 23h2 (< 10.0.22631.3155) • microsoft windows server 2019 (< 10.0.17763.5458) • microsoft windows server 2022 (< 10.0.20348.2322) • microsoft windows server 2022 23h2 (<= 10.0.25398.709)

Related

Weakness · CWE (1)

  • CWE-822 Untrusted Pointer Dereference weakness

References