CVE-2024-21338
HIGHCVSS 7.8/10Actively ExploitedEPSS 51.87%
Last modified
CVE-2024-21338 is a high-severity vulnerability rated 7.8/10 on the CVSS scale. Windows Kernel Elevation of Privilege Vulnerability. CISA has confirmed active exploitation in the wild. EPSS estimates a 51.87% chance of exploitation in the next 30 days.
Description
Windows Kernel Elevation of Privilege Vulnerability
Metrics
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Exploitation Status
This vulnerability is listed in CISA’s Known Exploited Vulnerabilities catalog, confirming active exploitation in the wild. Federal agencies must remediate by .
Weakness Enumeration
Affected Software
| Vendor | Product | Versions |
|---|---|---|
| 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 |
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21338Patch, Vendor Advisory
- https://decoded.avast.io/janvojtesek/lazarus-and-the-fudmodule-rootkit-beyond-byovd-with-an-admin-to-kernel-zero-day/Exploit, Technical Description, Third Party Advisory
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2024-21338Patch, Vendor Advisory
- https://packetstorm.news/files/id/190586/Exploit, VDB Entry
- https://www.exploit-db.com/exploits/52275Exploit, VDB Entry
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2024-21338US Government Resource
Timeline
- Published
- Last Modified
- Status
- Analyzed
Frequently Asked Questions
What is CVE-2024-21338?
Windows Kernel Elevation of Privilege Vulnerability
How severe is CVE-2024-21338?
CVE-2024-21338 has a CVSS score of 7.8/10 (HIGH severity). The EPSS model estimates a 51.87% probability of exploitation in the next 30 days. This vulnerability is listed in CISA's Known Exploited Vulnerabilities catalog.
How do I fix CVE-2024-21338?
Check the vendor references and advisories linked above for patched versions and mitigation guidance. You can also run a Strix scan to test if your systems are affected.
Are you affected by CVE-2024-21338?
Run a free Strix scan to check your systems for this vulnerability.
Scan your code nowSource: NVD / NIST