CVE-2026-83942: CWE-862: Missing Authorization in Microsoft Windows 10 Version 1809
Missing authorization in Windows Kernel allows an authorized attacker to elevate privileges locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-83942) is classified as CWE-862 (Missing Authorization) and affects the Windows Kernel in Windows 10 Version 1809 (build 10.0.17763.0). It allows an attacker with local authorized access to elevate their privileges due to insufficient authorization checks. The vulnerability has a CVSS 3.1 score of 7.8 with vector AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H, reflecting local attack vector, low attack complexity, and high impact 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, 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. The vulnerability impacts confidentiality, integrity, and availability of the affected system.
Mitigation Recommendations
An official fix is available from Microsoft for this vulnerability. Users and administrators should apply the security update provided by Microsoft as soon as possible to remediate the issue. Refer to the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83942 for detailed patch information and guidance.
CVE-2026-83942: CWE-862: Missing Authorization in Microsoft Windows 10 Version 1809
Description
Missing authorization in Windows Kernel 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 (CVE-2026-83942) is classified as CWE-862 (Missing Authorization) and affects the Windows Kernel in Windows 10 Version 1809 (build 10.0.17763.0). It allows an attacker with local authorized access to elevate their privileges due to insufficient authorization checks. The vulnerability has a CVSS 3.1 score of 7.8 with vector AV:L/AC:L/PR:L/UI:N/S:U/C:H/I:H/A:H, reflecting local attack vector, low attack complexity, and high impact 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, 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. The vulnerability impacts confidentiality, integrity, and availability of the affected system.
Mitigation Recommendations
An official fix is available from Microsoft for this vulnerability. Users and administrators should apply the security update provided by Microsoft as soon as possible to remediate the issue. Refer to the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83942 for detailed patch information and guidance.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-08-31T23:40:59.641Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-83942","vendor":"Microsoft"}]
Threat ID: 6aa04575acd9273b49fbbb3a
Added to database: 09/08/2026, 17:27:17 UTC
Last enriched: 09/08/2026, 17:55:20 UTC
Last updated: 09/08/2026, 18:54:25 UTC
Views: 2
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