8.8

CVE-2025-33073

Warnung
Medienbericht

Windows SMB Client Elevation of Privilege Vulnerability

Improper access control in Windows SMB allows an authorized attacker to elevate privileges over a network.
Daten sind bereitgestellt durch National Vulnerability Database (NVD)
Microsoft ≫ Windows 10 1507 HwPlatform x64 Version < 10.0.10240.21034
Microsoft ≫ Windows 10 1507 HwPlatform x86 Version < 10.0.10240.21034
Microsoft ≫ Windows 10 1607 HwPlatform x64 Version < 10.0.14393.8148
Microsoft ≫ Windows 10 1607 HwPlatform x86 Version < 10.0.14393.8148
Microsoft ≫ Windows 10 1809 HwPlatform x64 Version < 10.0.17763.7434
Microsoft ≫ Windows 10 1809 HwPlatform x86 Version < 10.0.17763.7434
Microsoft ≫ Windows 10 21h2 Version < 10.0.19044.5965
Microsoft ≫ Windows 10 22h2 Version < 10.0.19045.5965
Microsoft ≫ Windows 11 22h2 Version < 10.0.22621.5472
Microsoft ≫ Windows 11 23h2 Version < 10.0.22631.5472
Microsoft ≫ Windows 11 24h2 Version < 10.0.26100.4270
Microsoft ≫ Windows Server 2008 Version - Update sp2 HwPlatform x64
Microsoft ≫ Windows Server 2008 Version - Update sp2 HwPlatform x86
Microsoft ≫ Windows Server 2008 Version r2 Update sp1 HwPlatform x64
Microsoft ≫ Windows Server 2016 Version < 10.0.14393.8148
Microsoft ≫ Windows Server 2019 Version < 10.0.17763.7434
Microsoft ≫ Windows Server 2022 Version < 10.0.20348.3745
Microsoft ≫ Windows Server 2022 23h2 Version < 10.0.25398.1665
Microsoft ≫ Windows Server 2025 Version < 10.0.26100.4270
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20.10.2025: CISA Known Exploited Vulnerabilities (KEV) Catalog

Microsoft Windows SMB Client Improper Access Control Vulnerability

Schwachstelle

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.

Beschreibung

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

Erforderliche Maßnahmen
EPSS Metriken
Typ Quelle Score Percentile
EPSS FIRST.org 80.42% 0.996
CVSS Metriken
Quelle Base Score Exploit Score Impact Score Vector String
Microsoft 8.8 2.8 5.9
CVSS:3.1/AV:N/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H
CWE-284 Improper Access Control

The product does not restrict or incorrectly restricts access to a resource from an unauthorized actor.

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https://msrc.microsoft.com/update-guide/vulnerability/CVE-2025-33073
Vendor Advisory
https://www.vicarius.io/vsociety/posts/cve-2025-33073-detection-script-improper-access-control-in-windows-smb-affects-microsoft-products
Third Party Advisory
https://www.vicarius.io/vsociety/posts/cve-2025-33073-mitigation-script-improper-access-control-in-windows-smb-affects-microsoft-products
Third Party Advisory
Mitigation
https://www.cisa.gov/known-exploited-vulnerabilities-catalog?field_cve=CVE-2025-33073
US Government Resource