CVE-2025-21333
high · 7.8Actively exploitedOn the CISA Known Exploited Vulnerabilities catalog
Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
Added 2025-01-14Remediation due 2025-02-04
Windows Hyper-V NT Kernel Integration VSP Elevation of Privilege Vulnerability
7.8
CVSS
10.0%
EPSS (exploit prob.)
95th
EPSS percentile
2025-01-14
Published
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
Weaknesses
CWE-122
Affected products
| Vendor | Product | Affected versions |
|---|---|---|
| microsoft | windows_10_21h2 | < 10.0.19044.5371 |
| microsoft | windows_10_22h2 | < 10.0.19045.5371 |
| microsoft | windows_11_22h2 | < 10.0.22621.4751 |
| microsoft | windows_11_23h2 | < 10.0.22631.4751 |
| microsoft | windows_11_24h2 | < 10.0.26100.2894 |
| microsoft | windows_server_2022_23h2 | < 10.0.25398.1369 |
| microsoft | windows_server_2025 | < 10.0.26100.2894 |
Check a specific version with /api/v1/cve/match.
References
- https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21333
- https://www.exploit-db.com/exploits/52436
- https://www.vicarius.io/vsociety/posts/cve-2025-21333-elevated-privilege-exposure-in-windows-hyper-v-by-microsoft-detection-script
- https://www.vicarius.io/vsociety/posts/cve-2025-21333-elevated-privilege-exposure-in-windows-hyper-v-by-microsoft-mitigation-script
- https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-21333
Query this programmatically:
curl https://evil-db.io/api/v1/cve/CVE-2025-21333