CVE-2024-21338 KEV EXPLOIT
7.8
HIGH · CVSS 3.1 · EPSS 59.8% (pctl 99)
Patch first
On CISA KEV — known exploited in the wild, due 2024-03-25.
Description
Windows Kernel Elevation of Privilege Vulnerability
Scoring
| CVSS | 7.8 (HIGH, v3.1) |
|---|---|
| Vector | CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H |
| EPSS | 59.81% — more likely to be exploited than 99% of all CVEs |
| Weakness | CWE-822 |
| On CISA KEV | yes — remediate by 2024-03-25 |
| Public exploit | yes |
| Published | 2024-02-13 |
| Last modified | 2026-08-10 |
CISA KEV
| Name | Microsoft Windows Kernel Exposed IOCTL with Insufficient Access Control Vulnerability |
|---|---|
| Added | 2024-03-04 |
| Due | 2024-03-25 |
| Vendor / product | Microsoft / Windows |
| Ransomware use | known |
Affected (9)
| Vendor | Product |
|---|---|
| microsoft | windows 10 1809 |
| microsoft | windows 10 21h2 |
| microsoft | windows 10 22h2 |
| microsoft | windows 11 21h2 |
| microsoft | windows 11 22h2 |
| microsoft | windows 11 23h2 |
| microsoft | windows server 2019 |
| microsoft | windows server 2022 |
| microsoft | windows server 2022 23h2 |
Public exploits
| Source | Title | Date |
|---|---|---|
| exploit-db | Microsoft Windows 11 - Kernel Privilege Escalation | 2025-04-22 |
| exploit-db | Microsoft Windows 10.0.17763.5458 - Kernel Privilege Escalation | 2024-04-02 |
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21338
- https://decoded.avast.io/janvojtesek/lazarus-and-the-fudmodule-rootkit-beyond-byovd-with-an-admin-to-kernel-zero-day/
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21338
- https://packetstorm.news/files/id/190586/
- https://www.exploit-db.com/exploits/52275
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-21338
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