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CVE-2025-33073

Microsoft Windows SMB Client Improper Access Control Vulnerability

Description

Microsoft Windows SMB Client contains an improper access control vulnerability that could allow for privilege escalation. An attacker could execute a specially crafted malicious script to coerce the victim machine to connect back to the attack system using SMB and authenticate.

Recommended action

Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.

CISA remediation due date for U.S. federal agencies: 10 Nov 2025.

Collected automatically from public sources. Verify affected versions and fixes in the vendor's notice before acting.