CVE-2026-50391: CWE-269: Improper Privilege Management in Microsoft Windows 10 Version 1607
Improper privilege management in Windows Group Policy allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability, identified as CVE-2026-50391 and classified under CWE-269 (Improper Privilege Management), affects Windows 10 Version 1607 (build 10.0.14393.0). It arises from improper handling of privileges within Windows Group Policy, enabling an authorized attacker with local access to escalate their privileges. The vulnerability has a CVSS 3.1 base score of 7.8, indicating high severity, with impacts on confidentiality, integrity, and availability. Microsoft has released an official fix for this issue as documented in their security update guide.
Potential Impact
An authorized local attacker can exploit this vulnerability to elevate their privileges, potentially gaining higher-level access than intended. This can 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 this issue. No additional mitigation steps are indicated beyond applying the official patch.
CVE-2026-50391: CWE-269: Improper Privilege Management in Microsoft Windows 10 Version 1607
Description
Improper privilege management in Windows Group Policy allows an authorized attacker to elevate privileges locally.
CVSS v3.1
Score 7.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability, identified as CVE-2026-50391 and classified under CWE-269 (Improper Privilege Management), affects Windows 10 Version 1607 (build 10.0.14393.0). It arises from improper handling of privileges within Windows Group Policy, enabling an authorized attacker with local access to escalate their privileges. The vulnerability has a CVSS 3.1 base score of 7.8, indicating high severity, with impacts on confidentiality, integrity, and availability. Microsoft has released an official fix for this issue as documented in their security update guide.
Potential Impact
An authorized local attacker can exploit this vulnerability to elevate their privileges, potentially gaining higher-level access than intended. This can 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 this issue. No additional mitigation steps are indicated beyond applying the official patch.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-04T18:55:14.745Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50391","vendor":"Microsoft"}]
Threat ID: 6a56769768715ace43f08e4c
Added to database: 07/14/2026, 17:49:11 UTC
Last enriched: 08/13/2026, 14:46:27 UTC
Last updated: 08/27/2026, 22:52:12 UTC
Views: 90
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