SB2026011396 - Multiple vulnerabilities in Microsoft Windows Cloud Files Mini Filter Driver

Description

This security bulletin contains information about 2 secuirty vulnerabilities.

1) Untrusted Pointer Dereference (CVE-ID: CVE-2026-20940)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to untrusted pointer dereference in Windows Cloud Files Mini Filter Driver. A local user can gain elevated privileges on the target system.

2) Untrusted Pointer Dereference (CVE-ID: CVE-2026-20857)

The vulnerability allows a local user to escalate privileges on the system.

The vulnerability exists due to untrusted pointer dereference in Windows Cloud Files Mini Filter Driver. A local user can gain elevated privileges on the target system.

Remediation

Install update from vendor's website.

References

• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20940
• https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20857