CVE-2026-20823: CWE-200: Exposure of Sensitive Information to an Unauthorized Actor in Microsoft Windows 10 Version 1607
Exposure of sensitive information to an unauthorized actor in Windows File Explorer allows an authorized attacker to disclose information locally.
AI Analysis
Technical Summary
This vulnerability (CVE-2026-20823) involves the exposure of sensitive information to unauthorized actors through Windows File Explorer in Windows 10 Version 1607 (build 10.0.14393.0). The flaw allows an attacker with local privileges to disclose sensitive information without user interaction. The CVSS 3.1 vector indicates low attack complexity and privileges required, no user interaction, and high confidentiality impact. Microsoft has published an official fix to remediate this issue.
Potential Impact
An attacker with local access and limited privileges can disclose sensitive information from the affected system. The confidentiality impact is high, but integrity and availability are not affected. This could lead to unauthorized disclosure of sensitive data on the compromised system.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft for Windows 10 Version 1607 to remediate this vulnerability. Refer to the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20823 for the update details and installation instructions.
CVE-2026-20823: CWE-200: Exposure of Sensitive Information to an Unauthorized Actor in Microsoft Windows 10 Version 1607
Description
Exposure of sensitive information to an unauthorized actor in Windows File Explorer allows an authorized attacker to disclose information locally.
CVSS v3.1
Score 5.5medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-20823) involves the exposure of sensitive information to unauthorized actors through Windows File Explorer in Windows 10 Version 1607 (build 10.0.14393.0). The flaw allows an attacker with local privileges to disclose sensitive information without user interaction. The CVSS 3.1 vector indicates low attack complexity and privileges required, no user interaction, and high confidentiality impact. Microsoft has published an official fix to remediate this issue.
Potential Impact
An attacker with local access and limited privileges can disclose sensitive information from the affected system. The confidentiality impact is high, but integrity and availability are not affected. This could lead to unauthorized disclosure of sensitive data on the compromised system.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided by Microsoft for Windows 10 Version 1607 to remediate this vulnerability. Refer to the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20823 for the update details and installation instructions.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2025-12-03T05:54:20.374Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20823","vendor":"Microsoft"}]
Threat ID: 69668adba60475309f9adfa3
Added to database: 01/13/2026, 18:11:39 UTC
Last enriched: 07/30/2026, 23:48:54 UTC
Last updated: 09/10/2026, 19:36:52 UTC
Views: 174
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