CVE-2026-50391: CWE-269: Improper Privilege Management in Microsoft Windows 10 Version 1607
CVE-2026-50391 is a high-severity vulnerability in Microsoft Windows 10 Version 1607 involving improper privilege management in Windows Group Policy. This flaw allows an authorized local attacker to elevate their privileges. An official fix is available from Microsoft to address this issue.
AI Analysis
Technical Summary
This vulnerability, tracked as CVE-2026-50391, concerns improper privilege management within Windows Group Policy on Windows 10 Version 1607 (build 10.0.14393.0). It enables an attacker with some level of local authorization to escalate their privileges, potentially gaining higher system rights. The CVSS 3.1 base score is 7.8, indicating high severity with impact 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 full control over the affected system. This can lead to complete compromise of confidentiality, integrity, and availability of the system resources on Windows 10 Version 1607.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft as documented in the vendor advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50391 to remediate this vulnerability.
CVE-2026-50391: CWE-269: Improper Privilege Management in Microsoft Windows 10 Version 1607
Description
CVE-2026-50391 is a high-severity vulnerability in Microsoft Windows 10 Version 1607 involving improper privilege management in Windows Group Policy. This flaw allows an authorized local attacker to elevate their privileges. An official fix is available from Microsoft to address this issue.
CVSS v3.1
Score 7.8high
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability, tracked as CVE-2026-50391, concerns improper privilege management within Windows Group Policy on Windows 10 Version 1607 (build 10.0.14393.0). It enables an attacker with some level of local authorization to escalate their privileges, potentially gaining higher system rights. The CVSS 3.1 base score is 7.8, indicating high severity with impact 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 full control over the affected system. This can lead to complete compromise of confidentiality, integrity, and availability of the system resources on Windows 10 Version 1607.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft as documented in the vendor advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50391 to remediate this vulnerability.
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: 07/15/2026, 00:04:02 UTC
Last updated: 07/15/2026, 02:40:45 UTC
Views: 4
Community Reviews
0 reviewsCrowdsource mitigation strategies, share intel context, and vote on the most helpful responses. Sign in to add your voice and help keep defenders ahead.
Want to contribute mitigation steps or threat intel context? Sign in or create an account to join the community discussion.
Actions
Updates to AI analysis require Pro Console access. Upgrade inside Console → Billing.
External Links
Need more coverage?
Upgrade to Pro Console for AI refresh and higher limits.
For incident response and remediation, OffSeq services can help resolve threats faster.
Latest Threats
Check if your credentials are on the dark web
Instant breach scanning across billions of leaked records. Free tier available.