Product:
Windows Virtualization-Based Security
Summary
Untrusted pointer dereference in Windows Virtualization-Based Security Enclave allows an authorized attacker to disclose information locally. This vulnerability can lead to significant confidentiality impacts, making sensitive information accessible to unauthorized users. The issue arises from improper handling of pointers, which can be exploited under certain conditions.
Details
| Severity | Base Score | CVE |
|---|---|---|
| MEDIUM | 5.5 | CVE-2026-20819 |
Exploitation
To exploit this vulnerability, an attacker must have authorized access to the system where Windows Virtualization-Based Security is implemented. By manipulating the pointer dereference process, the attacker can gain access to sensitive information stored within the VBS Enclave. This requires low privileges and can be executed without user interaction, making it a concerning security risk.
Affected Products
- Windows Virtualization-Based Security: A security feature that isolates sensitive data and processes from the rest of the operating system.
Mitigation
To mitigate this vulnerability, it is recommended to apply the latest security updates provided by Microsoft. Regularly updating the system and monitoring for any unusual activity can help protect against potential exploitation. Additionally, implementing strict access controls can limit the risk of unauthorized access to the VBS Enclave.