CVE-2024-21338
Act now ● On CISA KEV — actively exploited used in ransomware
Actively exploited — on the CISA KEV list.
CVSS base
7.8
HIGH
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS — probability of exploitation (30 days)
59.8%
99.1th percentile
CISA KEV
Listed
Added 2024-03-04 · patch by 2024-03-25
Weakness / dates
CWE-822
Published 2024-02-13 · modified 2026-08-10
CVSS breakdown
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
| Attack Vector | L | Local |
| Attack Complexity | L | Low |
| Privileges Required | L | Low |
| User Interaction | N | None |
| Scope | U | Unchanged |
| Confidentiality | H | High |
| Integrity | H | High |
| Availability | H | High |
Timeline
- 2024-02-13 — Published (NVD)
- 2024-03-04 — Added to CISA KEV (actively exploited)
- 2024-03-25 — CISA patch-by deadline
- 2026-08-10 — Last modified (NVD)
Description
Windows Kernel Elevation of Privilege Vulnerability
Affected
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21338
- exploit 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
- exploit https://packetstorm.news/files/id/190586/
- exploit https://www.exploit-db.com/exploits/52275
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-21338