CVE-2026-49805: CWE-284: Improper Access Control in Microsoft Windows 10 Version 1607
Improper access control in Windows Win32K allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability, tracked as CVE-2026-49805 and categorized under CWE-284 (Improper Access Control), affects Windows 10 Version 1607 (build 10.0.14393.0). It arises from improper access control in the Win32K subsystem, enabling a local attacker with existing authorization to elevate their privileges. The CVSS 3.1 base score is 7.0, reflecting high severity with impacts on confidentiality, integrity, and availability. Microsoft has published an official fix for this vulnerability, as detailed in their security update guide.
Potential Impact
An authorized local attacker can exploit this vulnerability to elevate privileges, potentially gaining higher-level access than intended. This can lead to full system compromise, including unauthorized access to sensitive data and disruption of system operations. No known exploits are reported in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-49805 to remediate this vulnerability.
CVE-2026-49805: CWE-284: Improper Access Control in Microsoft Windows 10 Version 1607
Description
Improper access control in Windows Win32K allows an authorized attacker to elevate privileges locally.
CVSS v3.1
Score 7.0high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability, tracked as CVE-2026-49805 and categorized under CWE-284 (Improper Access Control), affects Windows 10 Version 1607 (build 10.0.14393.0). It arises from improper access control in the Win32K subsystem, enabling a local attacker with existing authorization to elevate their privileges. The CVSS 3.1 base score is 7.0, reflecting high severity with impacts on confidentiality, integrity, and availability. Microsoft has published an official fix for this vulnerability, as detailed in their security update guide.
Potential Impact
An authorized local attacker can exploit this vulnerability to elevate privileges, potentially gaining higher-level access than intended. This can lead to full system compromise, including unauthorized access to sensitive data and disruption of system operations. No known exploits are reported in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-49805 to remediate this vulnerability.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-01T17:02:37.208Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-49805","vendor":"Microsoft"}]
Threat ID: 6a566f7268715ace43e6b6d7
Added to database: 07/14/2026, 17:18:42 UTC
Last enriched: 08/13/2026, 14:27:06 UTC
Last updated: 08/25/2026, 22:52:12 UTC
Views: 73
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