Windows Hyper-V Out-of-Bounds Read Code Execution

Local code execution in Microsoft Windows Hyper-V stems from an out-of-bounds read condition (CWE-122 heap-based buffer overflow) that an attacker with high privileges on a guest or host context can leverage to break confidentiality, integrity, and availability boundaries. The CVSS 8.2 score is elevated by a scope change (S:C), indicating the flaw enables crossing the hypervisor isolation boundary. No public exploit identified at time of analysis, and the vulnerability is not currently listed in CISA KEV.

Local code execution in Microsoft Windows Hyper-V allows an authenticated attacker on a guest or host to escape sandbox boundaries by triggering an out-of-bounds read condition (CWE-843, type confusion) in the hypervisor. The flaw affects Windows 10 (21H2/22H2), Windows 11 (23H2/24H2/25H2/26H1), and Windows Server 2022/2025, with a vendor-released patch available and no public exploit identified at time of analysis. EPSS scoring of 0.15% and SSVC exploitation status of 'none' suggest limited near-term exploitation likelihood despite total technical impact potential.

Local code execution in Microsoft Windows Hyper-V allows an authenticated low-privilege attacker to run arbitrary code on the host via an out-of-bounds read (CWE-125) in the hypervisor. The flaw affects a broad swath of Windows 10, Windows 11, and Windows Server builds running Hyper-V, and Microsoft has released patches. No public exploit identified at time of analysis and EPSS is very low (0.06%), but SSVC technical impact is rated total.