CVE-2025-213337.8HighCWE-122

CVE-2025-21333: Windows Hyper-V NT Kernel Integration VSP Elevation of Privilege Vulnerability

Microsoft · Windows 10 Version 21H2

Vendor fix available · Affected: Microsoft Windows 10 Version 21H2 · Exploitation: in CISA KEV since 14 Jan 2025

Not in CyberSIXT coverage yet: no article names this CVE. This page shows the public record.

ExploitationIn CISA KEV

In CISA KEVCISA KEV catalogue14 Jan 2025
Exploited (reported): not seen
Scanning observed: not seen
Proof of concept public: not seen
Not established: not seen

10.1%probability of exploitation in the next 30 days

95th percentile

050100

Higher than 95% of scored CVEs

7.8HighCVSS 3.1

LowMediumHighCrit.

DescriptionCVE.org

Windows Hyper-V NT Kernel Integration VSP Elevation of Privilege Vulnerability

Affected products9

From the CVE record. A product or version that is not listed is unknown, not unaffected.

Microsoft · Windows 10 Version 21H2from 10.0.19044.0 before 10.0.19044.5371
Microsoft · Windows 10 Version 22H2from 10.0.19045.0 before 10.0.19045.5371
Microsoft · Windows 11 version 22H2from 10.0.22621.0 before 10.0.22621.4751
Microsoft · Windows 11 version 22H3from 10.0.22631.0 before 10.0.22631.4751
Microsoft · Windows 11 Version 23H2from 10.0.22631.0 before 10.0.22631.4751
Microsoft · Windows 11 Version 24H2from 10.0.26100.0 before 10.0.26100.2894
Microsoft · Windows Server 2022, 23H2 Edition (Server Core installation)from 10.0.25398.0 before 10.0.25398.1369
Microsoft · Windows Server 2025from 10.0.26100.0 before 10.0.26100.2894
Microsoft · Windows Server 2025 (Server Core installation)from 10.0.26100.0 before 10.0.26100.2894

On the Atlas

Every published CVE is on the CyberSIXT Atlas, grouped by weakness, vendor and month.

Open the Atlas

Exploitation: Exploited in the wild. Listed in the CISA Known Exploited Vulnerabilities catalogue.
CISA KEV: Listed since 14 Jan 2025 · catalogue entry
Public check: No public nuclei template
Weakness: Heap-based Buffer Overflow · Memory Corruption
Vendor: Microsoft
Published: January 2025
Band: Exploited in the wild, January 2025

What changed

14 Jan 2025
CISA added it to the KEV catalogue CISA

CoverageNo articles yet

No CyberSIXT article names CVE-2025-21333 yet, so there is no coverage timeline, action brief or change log for it. Everything on this page comes from the public CVE record, CISA KEV, EPSS and the nuclei template index. Search the archive or see the CVEs in the news.