CVE-2026-69910
CriticalCVSS 9.8Summary
Stack-based buffer overflow in Windows Hyper-V allows an unauthorized attacker to execute code remotely over a network.
Risk Assessment
An attacker could exploit this to escape a virtual machine and gain access to the host, potentially breaking isolation and compromising the entire virtualization infrastructure.
Recommendation
Apply security updates for Hyper-V and restrict access to virtual machine management to trusted administrators only.
Other vulnerabilities in Windows Hyper-V
See all- CVE-2026-80083High
Untrusted pointer dereference in Windows Hyper-V allows an authorized attacker to execute code locally.
- CVE-2017-8714High
The Hyper-V component on Microsoft Windows 8.1, Windows Server 2012 Gold and R2, Windows 10 1607, and Windows Server 2016 has a vulnerability allowing remote code execution when it fails to properly validate input from an authenticated user on a guest operating system.
- CVE-2017-8664High
A vulnerability in Windows Hyper-V allows remote code execution when the system fails to properly validate input from a privileged user on a guest operating system.
- CVE-2017-0193High
A vulnerability in Windows Hyper-V allows an attacker to gain elevated privileges on a target guest operating system when Hyper-V instruction emulation fails to properly enforce privilege levels.
- CVE-2017-0212High
Windows Hyper-V contains a vulnerability that allows for elevation of privilege when Microsoft Windows 10 Gold, 1511, 1607, 1703, and Windows Server 2016 fail to properly validate vSMB packet data.
- CVE-2026-40402Critical
A use after free vulnerability in Windows Hyper-V allows an unauthorized attacker to elevate privileges locally.
- CVE-2021-26867Critical
Remote code execution vulnerability in Windows Hyper-V. An attacker could exploit this flaw to execute arbitrary code on the host.
- CVE-2026-61368Medium
Heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to disclose information locally.
- CVE-2026-50680High
Heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to elevate privileges locally.
- CVE-2026-50485Medium
In Windows Hyper-V, a buffer over-read vulnerability allows an authorized attacker to cause a denial of service (DoS) over an adjacent network.
Original NVD description (English source)
Stack-based buffer overflow in Windows Hyper-V allows an unauthorized attacker to execute code over a network.