Windows Kernel Elevation of Privilege Vulnerability

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Summary

CVECVE-2024-21338
StatePUBLISHED
Assignermicrosoft
Source PriorityCVE Program / NVD first with legacy fallback
Published2024-02-13 18:15:49 UTC
Updated2026-08-10 16:18:40 UTC
DescriptionWindows Kernel Elevation of Privilege Vulnerability

Risk And Classification

Primary CVSS: v3.1 7.8 HIGH from [email protected]

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

EPSS: 0.598100000 probability, percentile 0.990600000 (date 2026-08-22)

CISA KEV: Listed on 2024-03-04; due 2024-03-25; ransomware use Known

Problem Types: CWE-822 | NVD-CWE-noinfo | CWE-822 CWE-822: Untrusted Pointer Dereference

VersionSourceTypeScoreSeverityVector
3.1[email protected]Secondary7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
3.1CNACVSS7.8HIGHCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C

CVSS v3.1 Breakdown

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High

CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H

CISA Known Exploited Vulnerability

VendorMicrosoft
ProductWindows
NameMicrosoft Windows Kernel Exposed IOCTL with Insufficient Access Control Vulnerability
Required ActionApply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Noteshttps://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21338; https://nvd.nist.gov/vuln/detail/CVE-2024-21338

NVD Known Affected Configurations (CPE 2.3)

TypeVendorProductVersionUpdateEditionLanguage
Operating System Microsoft Windows 10 1809 All All All All
Operating System Microsoft Windows 10 21h2 All All All All
Operating System Microsoft Windows 10 22h2 All All All All
Operating System Microsoft Windows 11 21h2 All All All All
Operating System Microsoft Windows 11 22h2 All All All All
Operating System Microsoft Windows 11 23h2 All All All All
Operating System Microsoft Windows Server 2019 All All All All
Operating System Microsoft Windows Server 2022 All All All All
Operating System Microsoft Windows Server 2022 23h2 All All All All

Vendor Declared Affected Products

SourceVendorProductVersionPlatforms
CNA Microsoft Windows 10 Version 1809 affected 10.0.17763.0 10.0.17763.5458 custom 32-bit Systems, x64-based Systems
CNA Microsoft Windows 10 Version 1809 affected 10.0.0 10.0.17763.5458 custom ARM64-based Systems
CNA Microsoft Windows 10 Version 21H2 affected 10.0.19043.0 10.0.19044.4046 custom 32-bit Systems, ARM64-based Systems, x64-based Systems
CNA Microsoft Windows 10 Version 22H2 affected 10.0.19045.0 10.0.19045.4046 custom 32-bit Systems, ARM64-based Systems, x64-based Systems
CNA Microsoft Windows 11 Version 21H2 affected 10.0.0 10.0.22000.2777 custom ARM64-based Systems, x64-based Systems
CNA Microsoft Windows 11 Version 22H2 affected 10.0.22621.0 10.0.22621.3155 custom ARM64-based Systems, x64-based Systems
CNA Microsoft Windows 11 Version 22H3 affected 10.0.22631.0 10.0.22631.3155 custom ARM64-based Systems
CNA Microsoft Windows 11 Version 23H2 affected 10.0.22631.0 10.0.22631.3155 custom x64-based Systems
CNA Microsoft Windows Server 2019 affected 10.0.17763.0 10.0.17763.5458 custom x64-based Systems
CNA Microsoft Windows Server 2019 Server Core Installation affected 10.0.17763.0 10.0.17763.5458 custom x64-based Systems
CNA Microsoft Windows Server 2022 affected 10.0.20348.0 10.0.20348.2322 custom x64-based Systems
CNA Microsoft Windows Server 2022 23H2 Edition Server Core Installation affected 10.0.25398.0 10.0.25398.709 custom x64-based Systems

References

ReferenceSourceLinkTags
msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21338 af854a3a-2127-422b-91ae-364da2661108 msrc.microsoft.com Patch, Vendor Advisory
decoded.avast.io/janvojtesek/lazarus-and-the-fudmodule-rootkit-beyond-byovd-wi... af854a3a-2127-422b-91ae-364da2661108 decoded.avast.io Exploit, Technical Description, Third Party Advisory
www.exploit-db.com/exploits/52275 af854a3a-2127-422b-91ae-364da2661108 www.exploit-db.com Exploit, VDB Entry
packetstorm.news/files/id/190586 af854a3a-2127-422b-91ae-364da2661108 packetstorm.news Exploit, VDB Entry
www.cisa.gov/known-exploited-vulnerabilities-catalog 134c704f-9b21-4f2e-91b3-4a467353bcc0 www.cisa.gov US Government Resource
CVE Program record CVE.ORG www.cve.org canonical
NVD vulnerability detail NVD nvd.nist.gov canonical, analysis
CISA Known Exploited Vulnerabilities catalog CISA www.cisa.gov kev

Additional Advisory Data

SourceTimeEvent
ADP2024-03-04T00:00:00.000ZCVE-2024-21338 added to CISA KEV

Legacy QID Mappings

  • 92111 Microsoft Windows Security Update for February 2024

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