Executive brief
Windows Hyper-V, Microsoft's virtualization platform used to create and manage virtual machines in enterprise environments, contains a heap-based buffer overflow vulnerability. An authorized attacker with local access could exploit this flaw to execute arbitrary code with elevated privileges, potentially compromising the entire virtualization infrastructure and all hosted virtual machines.
Technical details
A heap-based buffer overflow exists in Windows Hyper-V that can be triggered by an authorized local attacker to achieve arbitrary code execution. The vulnerability requires local access to the system and authorization to interact with Hyper-V components, but does not require administrator privileges to trigger. A successful exploit could allow an attacker to execute code in the context of the Hyper-V process, potentially leading to system compromise and escape from virtualized environments. Microsoft has released security updates to address this vulnerability.
Affected products
- Microsoft Windows Hyper-V
Timeline
- 2026-09-08: disclosed