SB2025070945 - Multiple vulnerabilities in Microsoft Windows Virtualization-Based Security (VBS)

Description

This security bulletin contains information about 3 vulnerabilities.

1) Missing support for integrity check (CVE-ID: CVE-2025-48803)

CWE-ID: CWE-353 - Missing Support for Integrity Check

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a local user to compromise the target system.

The vulnerability exists due to missing support for integrity check in Windows Virtualization-Based Security (VBS). A local administrator can gain elevated privileges on the target system.

2) Missing support for integrity check (CVE-ID: CVE-2025-48811)

CWE-ID: CWE-353 - Missing Support for Integrity Check

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:H/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a local user to compromise the target system.

The vulnerability exists due to missing support for integrity check in Windows Virtualization-Based Security (VBS) Enclave. A local administrator can gain elevated privileges on the target system.

3) Protection Mechanism Failure (CVE-ID: CVE-2025-47159)

CWE-ID: CWE-693 - Protection Mechanism Failure

CVSSv4: CVSS:4.0/AV:L/AC:L/AT:N/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N/E:U/U:Clear

The vulnerability allows a local user to bypass implemented security restrictions.

The vulnerability exists due to insufficient implementation of security measures in Windows Virtualization-Based Security (VBS). A local user can bypass implemented security restrictions and elevate privileges on the system.

Remediation

Install update from vendor's website.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-48803
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-48811
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-47159