CVE-2025-33073 - Microsoft Windows SMB Client Improper Access Control Vulnerability
Project:Microsoft
Product:Windows
Date Added:2025-10-20Due Date:2025-11-10
Vulnerability Name
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.
Known To Be Used in Ransomware Campaigns?
Unknown
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.
Additional Notes
https://msrc.microsoft.com/update-guide/en-US/advisory/CVE-2025-33073
https://nvd.nist.gov/vuln/detail/CVE-2025-33073
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