peter bassill · operator
$ cve CVE-2025-21334 JSON

CVE-2025-21334 KEV

7.8
HIGH · CVSS 3.1 · EPSS 1.6% (pctl 74)

Patch first

On CISA KEV — known exploited in the wild, due 2025-02-04.

Description

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

Scoring

CVSS7.8 (HIGH, v3.1)
VectorCVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS1.56% — more likely to be exploited than 74% of all CVEs
WeaknessCWE-416
On CISA KEVyes — remediate by 2025-02-04
Public exploitnone known
Published2025-01-14
Last modified2026-06-17

CISA KEV

NameMicrosoft Windows Hyper-V NT Kernel Integration VSP Use-After-Free Vulnerability
Added2025-01-14
Due2025-02-04
Vendor / productMicrosoft / Windows
Ransomware usenone reported

Affected (7)

VendorProduct
microsoftwindows 10 21h2
microsoftwindows 10 22h2
microsoftwindows 11 22h2
microsoftwindows 11 23h2
microsoftwindows 11 24h2
microsoftwindows server 2022 23h2
microsoftwindows server 2025

References

→ the Explorer  ·  watch your stack  ·  NVD