CVE-2024-21338 (GCVE-0-2024-21338)

Vulnerability from cvelistv5 – Published: 2024-02-13 18:02 – Updated: 2025-10-21 23:05
VLAI CISA KEVIntel
Title
Windows Kernel Elevation of Privilege Vulnerability
Summary
Windows Kernel Elevation of Privilege Vulnerability
Severity
7.8 (High)
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C
SSVC
Exploitation: active Automatable: no Technical Impact: total
CISA Coordinator (v2.0.3)
CWE
  • CWE-822 - Untrusted Pointer Dereference
Assigner
References
Impacted products
Vendor Product Version
Microsoft Windows 10 Version 1809 Affected: 10.0.17763.0 , < 10.0.17763.5458 (custom)
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Microsoft Windows 10 Version 1809 Affected: 10.0.0 , < 10.0.17763.5458 (custom)
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Microsoft Windows Server 2019 Affected: 10.0.17763.0 , < 10.0.17763.5458 (custom)
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Microsoft Windows Server 2019 (Server Core installation) Affected: 10.0.17763.0 , < 10.0.17763.5458 (custom)
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Microsoft Windows Server 2022 Affected: 10.0.20348.0 , < 10.0.20348.2322 (custom)
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Microsoft Windows 11 version 21H2 Affected: 10.0.0 , < 10.0.22000.2777 (custom)
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Microsoft Windows 10 Version 21H2 Affected: 10.0.19043.0 , < 10.0.19044.4046 (custom)
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Microsoft Windows 11 version 22H2 Affected: 10.0.22621.0 , < 10.0.22621.3155 (custom)
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Microsoft Windows 10 Version 22H2 Affected: 10.0.19045.0 , < 10.0.19045.4046 (custom)
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Microsoft Windows 11 version 22H3 Affected: 10.0.22631.0 , < 10.0.22631.3155 (custom)
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Microsoft Windows 11 Version 23H2 Affected: 10.0.22631.0 , < 10.0.22631.3155 (custom)
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Microsoft Windows Server 2022, 23H2 Edition (Server Core installation) Affected: 10.0.25398.0 , < 10.0.25398.709 (custom)
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Date Public
2024-02-13 08:00
CISA
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: 84dfe84e-780a-4938-bfb7-9662816cb473

Vulnerability ID: CVE-2024-21338

Status: Confirmed

Status Updated: 2024-03-04 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2024-03-04
Asserted: 2024-03-04
Scope
Notes: KEV entry: Microsoft Windows Kernel Exposed IOCTL with Insufficient Access Control Vulnerability | Affected: Microsoft / Windows | 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. | Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable. | Due date: 2024-03-25 | Known ransomware campaign use (KEV): Known | Notes (KEV): https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21338; https://nvd.nist.gov/vuln/detail/CVE-2024-21338
Evidence

Type: Vendor Report

Signal: Successful Exploitation

Confidence: 80%

Source: cisa-kev

Details
Cwes CWE-822
Feed CISA Known Exploited Vulnerabilities Catalog
Product Windows
Due Date 2024-03-25
Date Added 2024-03-04
Vendorproject Microsoft
Vulnerabilityname Microsoft Windows Kernel Exposed IOCTL with Insufficient Access Control Vulnerability
Knownransomwarecampaignuse Known
References
Created: 2026-02-02 12:26 UTC | Updated: 2026-02-06 07:17 UTC
KEVIntel
Known Exploited Vulnerability - GCVE BCP-07 Compliant
KEV entry ID: b39d5ac7-9998-4e7f-8963-8e33a8c38ce6

Vulnerability ID: CVE-2024-21338

Status: Confirmed

Status Updated: 2024-03-04 00:00 UTC

Exploited: Yes

Timestamps
First Seen: 2024-03-04
Asserted: 2024-03-04
Scope
Notes: KEVIntel entry: Windows Kernel Elevation of Privilege Vulnerability | Affected: Microsoft / Windows 10 Version 1809, Windows Server 2019, Windows Server 2019 (Server Core installation), Windows Server 2022, Windows 11 version 21H2, Windows 10 Version 21H2, Windows 11 version 22H2, Windows 10 Version 22H2, Windows 11 version 22H3, Windows 11 Version 23H2, Windows Server 2022, 23H2 Edition (Server Core installation) | CVSS: 7.8 (HIGH) | Used in malware: yes | Not yet in CISA KEV: False
Evidence

Type: Public Report

Signal: Confirmed Compromise

Confidence: 70%

Source: kevintel

Details
Feed KEVIntel (kevintel.com)
Title Windows Kernel Elevation of Privilege Vulnerability
Vendor Microsoft
Product Windows 10 Version 1809, Windows Server 2019, Windows Server 2019 (Server Core installation), Windows Server 2022, Windows 11 version 21H2, Windows 10 Version 21H2, Windows 11 version 22H2, Windows 10 Version 22H2, Windows 11 version 22H3, Windows 11 Version 23H2, Windows Server 2022, 23H2 Edition (Server Core installation)
Added Date 2024-03-04T00:00:00.000Z
Cvss Score 7.8
Epss Score None
Cvss Severity HIGH
Epss Percentile None
Used In Malware yes
Ahead Of Cisa Kev None
Not Yet In Cisa Kev False
References
Created: 2026-06-23 14:05 UTC | Updated: 2026-06-23 14:05 UTC
Show details on NVD website
To clipboard 

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}


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Tags
Taxonomy of the tags.





Forecast uses a logistic model when the trend is rising, or an exponential decay model when the trend is falling. Fitted via linearized least squares.

Sightings

Author Source Type Date Other

Nomenclature

  • Seen: The vulnerability was mentioned, discussed, or observed by the user.
  • Confirmed: The vulnerability has been validated from an analyst's perspective.
  • Published Proof of Concept: A public proof of concept is available for this vulnerability.
  • Exploited: The vulnerability was observed as exploited by the user who reported the sighting.
  • Patched: The vulnerability was observed as successfully patched by the user who reported the sighting.
  • Not exploited: The vulnerability was not observed as exploited by the user who reported the sighting.
  • Not confirmed: The user expressed doubt about the validity of the vulnerability.
  • Not patched: The vulnerability was not observed as successfully patched by the user who reported the sighting.


Detection rules are retrieved from Rulezet.