CVE-2025-33073
MI
Microsoft Windows
Microsoft Windows SMB Client Improper Access Control Vulnerability
What it is
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.
What to do
Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Vendor notices and references
- msrc.microsoft.com/update-guide/en-US/advisory/CVE-2025-33073
- nvd.nist.gov/vuln/detail/CVE-2025-33073
Description and required action as published by CISA. Full record at NVD.
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