CVE-2025-21333
HighActively exploited (CISA KEV)
Description
Windows Hyper-V NT Kernel Integration VSP Elevation of Privilege Vulnerability
SeverityHigh
CVSS7.8
Exploit probability—
Product
Microsoft Windows
PublishedJan 14, 2025
First seenJan 14, 2025
Added to KEVJan 14, 2025
Weakness typeCWE-122CWE-122
How to fix
CISA required action
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
CISA due date: Feb 4, 2025Update
- microsoft windows_10_21h210.0.19044.5371 or later
- microsoft windows_10_22h210.0.19045.5371 or later
- microsoft windows_11_22h210.0.22621.4751 or later
- microsoft windows_11_23h210.0.22631.4751 or later
- microsoft windows_11_24h210.0.26100.2894 or later
- microsoft windows_server_2022_23h210.0.25398.1369 or later
- microsoft windows_server_202510.0.26100.2894 or later
Affected products
| Product | Affected versions | Fixed in |
|---|---|---|
| microsoft windows_10_21h2 | v < 10.0.19044.5371 | 10.0.19044.5371 |
| microsoft windows_10_22h2 | v < 10.0.19045.5371 | 10.0.19045.5371 |
| microsoft windows_11_22h2 | v < 10.0.22621.4751 | 10.0.22621.4751 |
| microsoft windows_11_23h2 | v < 10.0.22631.4751 | 10.0.22631.4751 |
| microsoft windows_11_24h2 | v < 10.0.26100.2894 | 10.0.26100.2894 |
| microsoft windows_server_2022_23h2 | v < 10.0.25398.1369 | 10.0.25398.1369 |
| microsoft windows_server_2025 | v < 10.0.26100.2894 | 10.0.26100.2894 |
Check your version
Choose the product and enter the version you run to see whether it falls in the affected range.
In the Intelligence 360 plan
Attack Surface Management
See the assets tied to your domains, the technologies they run and known vulnerabilities in one list.