Security CISA KEV CVE-2025-21335 CVE-2025-21335 CISA KEV
Microsoft Windows Hyper-V NT Kernel Integration VSP Use-After-Free Vulnerability
Severity unknown CVSS unknown Check the vendor advisory for fixed versions
CISA lists this Microsoft vulnerability as known exploited. Its MSRC release detail is outside this installation's collected history.
CISA catalog record
Microsoft Windows Hyper-V NT Kernel Integration VSP contains a use-after-free vulnerability that allows a local attacker to gain SYSTEM privileges.
Product Windows
Added to KEV 14 Jan 2025
Federal remediation due 4 Feb 2025
Known ransomware use Not reported Page history
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23 Oct 2026 · 09:33:49 UTC
Source coverage: cisa-kev Incomplete → Current 23 Oct 2026 · 08:31:50 UTC
Source coverage: cisa-kev Current → Incomplete Explore global source statements, affected packages and advisory history for CVE-2025-21335 . The catalog has a separate collection scope from Microsoft release records.
More advisories, affected versions and source history Overview Affected History Connections
Related advisories and sources Publishers link these advisories through the identifiers shown below. A shared identifier or date alone does not tell you whether your software is affected or whether the advisories describe the same cause.
CVE-2025-21335 · CVE overview and exploitation status
cve-program · CVE-2025-21335
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