Product:
Windows Hyper-V
Summary
Heap-based buffer overflow in Windows Hyper-V allows an authorized attacker to execute code locally. This vulnerability can lead to significant impacts on confidentiality, integrity, and availability. Attackers with low privileges can exploit this issue if they have local access to the system.
Details
| Severity | Base Score | CVE |
|---|---|---|
| HIGH | 7.3 | CVE-2026-21244 |
Exploitation
To exploit this vulnerability, an attacker must have local access to the affected system and be able to execute code. By leveraging the heap-based buffer overflow, the attacker can manipulate memory and execute arbitrary code with the same privileges as the user running the Hyper-V service. User interaction is required to trigger the exploit, making it essential for the attacker to convince the user to perform specific actions.
Affected Products
- Windows Hyper-V: A virtualization technology that allows users to run multiple operating systems on a single physical machine.
Mitigation
To mitigate this vulnerability, users should ensure that they apply the latest security updates provided by Microsoft. Additionally, restricting local access to systems running Hyper-V can help reduce the risk of exploitation. Regularly reviewing and updating security policies can also enhance overall system security.