Home / Vulnerabilities / CVE-2025-33073
HIGH SEVERITY
CVE-2025-33073 Microsoft · Windows

Microsoft Windows SMB Client Improper Access Control Vulnerability

Technical Severity

CVSS v3.1 Metrics

HIGH
8.8 / 10
Minimal Risk Critical
Vector Specification
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:P/RL:O/RC:C
Exploitation Likelihood

EPSS Prediction

48.93 %
Predictive Probability
Percentile Rank
97.7 th

Documented as more likely to be exploited than 97.7% of known CVEs.

Detection Date

Oct 20, 2025

Remediation Due

Nov 10, 2025

CISA Catalog Active

Threat Analysis

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.

Remediation Directive

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

External Intelligence