CVE-2025-21333

high-risk
Published 2025-01-14

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

Do I need to act?

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81.3% chance of exploitation in next 30 days
EPSS score — higher than 19% of all CVEs
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CISA KEV: actively exploited in the wild
On the Known Exploited Vulnerabilities catalog — federal agencies must patch
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1 public exploit available
52436
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.8/10 High
LOCAL / LOW complexity

Affected Products (7)

Affected Vendors

Microsoft

References (5)

Patch https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-21333
Exploit https://www.exploit-db.com/exploits/52436
Mitigation https://www.vicarius.io/vsociety/posts/cve-2025-21333-elevated-privilege-exposur...
Mitigation https://www.vicarius.io/vsociety/posts/cve-2025-21333-elevated-privilege-exposur...
US Government Resource https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-...
65
/ 100
high-risk
Severity 24/34 · High
Exploitability 27/34 · High
Exposure 14/34 · Moderate