CVE-2025-33073HIGH 8.8CISA KEVEPSS p99.1%

CVE-2025-33073Microsoft Windows SMB Client Improper Access Control Vulnerability

Microsoft / Windows

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.

Scoring

CVSS 3.18.8 (HIGH)
VectorCVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
EPSS64.31% probability of exploitation · percentile 99.1% · 2026-06-18T12:00:27Z
Published2025-06-10
Last modified2025-10-27

CISA KEV entry

Added to KEV: 2025-10-20

Underlying weaknesses· 1

CWE-284

References

  1. https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-33073
  2. https://www.vicarius.io/vsociety/posts/cve-2025-33073-detection-script-improper-access-control-in-windows-smb-affects-microsoft-products
  3. https://www.vicarius.io/vsociety/posts/cve-2025-33073-mitigation-script-improper-access-control-in-windows-smb-affects-microsoft-products
  4. https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-33073

1

TypeTargetConfidenceTier
WeaknessImproper Access Controlcwe-2840%live

(incoming)1

TypeTargetConfidenceTier
KEVEntryMicrosoft Windows SMB Client Improper Access Control Vulnerabilitykev-cve-2025-330730%live

Related by meaning· 6

Nearest entities by semantic similarity across the cs-graph corpus.

CVE
Microsoft Windows Improper Access Control Vulnerability
CVE
CVE-2025-33067
CVE
Microsoft SMBv3 Remote Code Execution Vulnerability
CVE
Microsoft Windows Improper Privilege Management Vulnerability
CVE
Microsoft Windows SMB Information Disclosure Vulnerability
CVE
CVE-2025-53795
Sourced from NVD + CISA KEV + FIRST.org EPSS. Curated for EU compliance use cases by Adam Lundqvist, Founder at SQUR.