CVE-2026-102214

Summary

A use-after-free vulnerability in Windows Hyper-V allows an authenticated attacker to execute arbitrary code on the host system with elevated privileges. This flaw occurs when Hyper-V releases memory that is still being referenced, potentially leading to remote code execution.

Exploitability

Exploitation requires local authentication and is moderately difficult to achieve in practice, as it involves crafting a specific Hyper-V configuration that triggers the use-after-free condition during memory management operations.

Blast radius

If exploited, this vulnerability could allow an attacker to gain full control of the Hyper-V host system, potentially compromising all virtual machines running on that host and enabling lateral movement throughout the network.

Detection

Monitor for unusual Hyper-V service behavior or memory access violations in system logs, particularly around Hyper-V Virtual Machine Management Service (vmms.exe) process activity.

Prioritized remediation

Apply the latest Windows updates containing the Hyper-V fix, specifically targeting the patch released in the 2026-04 cumulative update for Windows 10/11 and Windows Server 2019/2022.

Analysis generated locally by garnet-coder (no data left the box). AI-assisted — verify against primary sources before acting.