What is CVE-2025-21779?

CVE-2025-21779 is a security advisory published by Microsoft Security Response Center (MSRC) with Medium severity. KVM: x86: Reject Hyper-V's SEND_IPI hypercalls if local APIC isn't in-kernel

Which CVE IDs does CVE-2025-21779 cover?

CVE-2025-21779 covers the following CVE IDs: CVE-2025-21779. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

CVE-2025-21779Medium

KVM: x86: Reject Hyper-V's SEND_IPI hypercalls if local APIC isn't in-kernel

Vendor

Microsoft Security Response Center (MSRC)

Published

June 3, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2025-21779 →