CVE-2026-50343: CWE-269: Improper Privilege Management in Microsoft Windows 10 Version 1809
Improper privilege management in Microsoft Install Service allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability, identified as CVE-2026-50343 and classified under CWE-269 (Improper Privilege Management), affects Microsoft Windows 10 Version 1809 (build 10.0.17763.0). It arises from improper handling of privileges within the Microsoft Install Service, enabling an authorized local attacker to escalate privileges. 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 for this vulnerability, 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, affecting confidentiality, integrity, and availability of the system.
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.
CVE-2026-50343: CWE-269: Improper Privilege Management in Microsoft Windows 10 Version 1809
Description
Improper privilege management in Microsoft Install Service 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-2026-50343 and classified under CWE-269 (Improper Privilege Management), affects Microsoft Windows 10 Version 1809 (build 10.0.17763.0). It arises from improper handling of privileges within the Microsoft Install Service, enabling an authorized local attacker to escalate privileges. 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 for this vulnerability, 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, affecting confidentiality, integrity, and availability of the system.
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.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-06-04T18:15:10.953Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-50343","vendor":"Microsoft"}]
Threat ID: 6a56769168715ace43f08c8f
Added to database: 07/14/2026, 17:49:05 UTC
Last enriched: 08/13/2026, 14:36:26 UTC
Last updated: 08/28/2026, 19:39:44 UTC
Views: 95
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