What is CVE-2025-39823?

CVE-2025-39823 is a security advisory published by Microsoft Security Response Center (MSRC) with High severity. KVM: x86: use array_index_nospec with indices that come from guest

Which CVE IDs does CVE-2025-39823 cover?

CVE-2025-39823 covers the following CVE IDs: CVE-2025-39823. Each CVE has its own detail page on EchelonGraph Pulse with the synthesized EG score.

What is the CVSS v3 score of CVE-2025-39823?

CVE-2025-39823 has a CVSS v3 base score of 7.8, published by Microsoft Security Response Center (MSRC).

CVE-2025-39823HighCVSS 7.8

KVM: x86: use array_index_nospec with indices that come from guest

Vendor

Microsoft Security Response Center (MSRC)

Published

June 3, 2026

Last Modified

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🔗 CVE IDs covered (1)

CVE-2025-39823 →