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CVE-2026-33834: CWE-284: Improper Access Control in Microsoft Windows 10 Version 1607

0
High
VulnerabilityCVE-2026-33834cvecve-2026-33834cwe-284
Published: 05/12/2026 (05/12/2026, 16:58:18 UTC)
Source: CVE Database V5
Vendor/Project: Microsoft
Product: Windows 10 Version 1607

Description

Improper access control in Windows Event Logging Service allows an authorized attacker to elevate privileges locally.

CVSS v3.1

Score 7.8high

Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
CVSS:3.1/AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H/E:U/RL:O/RC:C

Affected software

Microsoft

Windows 10 Version 1607

Affected versions
>=10.0.14393.0 <10.0.14393.9140

Microsoft

Windows 10 Version 1809

Affected versions
>=10.0.17763.0 <10.0.17763.8755

Microsoft

Windows 10 Version 21H2

Affected versions
>=10.0.19044.0 <10.0.19044.7291

Microsoft

Windows 10 Version 22H2

Affected versions
>=10.0.19045.0 <10.0.19045.7417

Microsoft

Windows 11 version 23H2

Affected versions
>=10.0.22631.0 <10.0.22631.7079

Microsoft

Windows 11 Version 23H2

Affected versions
>=10.0.22631.0 <10.0.22631.7219

Microsoft

Windows 11 Version 24H2

Affected versions
>=10.0.26100.0 <10.0.26100.8457

Microsoft

Windows 11 Version 25H2

Affected versions
>=10.0.26200.0 <10.0.26200.8457

Microsoft

Windows 11 version 26H1

Affected versions
>=10.0.28000.0 <10.0.28000.2113

Microsoft

Windows Server 2012

Affected versions
>=6.2.9200.0 <6.2.9200.26079

Microsoft

Windows Server 2012 (Server Core installation)

Affected versions
>=6.2.9200.0 <6.2.9200.26079

Microsoft

Windows Server 2012 R2

Affected versions
>=6.3.9600.0 <6.3.9600.23181

Microsoft

Windows Server 2012 R2 (Server Core installation)

Affected versions
>=6.3.9600.0 <6.3.9600.23181

Microsoft

Windows Server 2016

Affected versions
>=10.0.14393.0 <10.0.14393.9140

Microsoft

Windows Server 2016 (Server Core installation)

Affected versions
>=10.0.14393.0 <10.0.14393.9140

Microsoft

Windows Server 2019

Affected versions
>=10.0.17763.0 <10.0.17763.8755

Microsoft

Windows Server 2019 (Server Core installation)

Affected versions
>=10.0.17763.0 <10.0.17763.8755

Microsoft

Windows Server 2022

Affected versions
>=10.0.20348.0 <10.0.20348.5139

Microsoft

Windows Server 2022, 23H2 Edition (Server Core installation)

Affected versions
>=10.0.25398.0 <10.0.25398.2330

Microsoft

Windows Server 2025

Affected versions
>=10.0.26100.0 <10.0.26100.32860

Microsoft

Windows Server 2025 (Server Core installation)

Affected versions
>=10.0.26100.0 <10.0.26100.32860

AI-Powered Analysis

Machine-generated threat intelligence

AILast updated: 08/11/2026, 16:33:59 UTC

Technical Analysis

This vulnerability (CVE-2026-33834) arises from improper access control in the Windows Event Logging Service on Windows 10 Version 1607 (build 10.0.14393.0). An attacker with local authorized access can exploit this flaw to elevate privileges, potentially gaining higher system rights than intended. The CVSS v3.1 base score is 7.8, indicating high severity with impacts on confidentiality, integrity, and availability. Microsoft has released an official fix to address this issue.

Potential Impact

An authorized local attacker can exploit this vulnerability to elevate privileges on the affected Windows 10 Version 1607 system. This could lead to full system compromise, including unauthorized access to sensitive information, modification of system settings, and disruption of system availability.

Mitigation Recommendations

Microsoft has released an official fix for this vulnerability. It is recommended to apply the security update provided by Microsoft as soon as possible to remediate the issue. No additional mitigation steps are indicated by the vendor advisory.

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Technical Details

Data Version
5.2
Assigner Short Name
microsoft
Date Reserved
2026-03-24T00:52:01.353Z
Cvss Version
3.1
State
PUBLISHED
Remediation Level
official-fix
Vendor Advisory Urls
[{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-33834","vendor":"Microsoft"}]

Threat ID: 6a036539cbff5d861008c334

Added to database: 05/12/2026, 17:36:57 UTC

Last enriched: 08/11/2026, 16:33:59 UTC

Last updated: 09/14/2026, 10:01:30 UTC

Views: 59

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