CVE-2026-20939: 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-2026-20939) involves an exposure of sensitive information (CWE-200) in Windows File Explorer on Windows 10 Version 1607 (build 10.0.14393.0). An attacker with local privileges and low complexity requirements can access sensitive information without requiring user interaction. The CVSS 3.1 base score is 5.5, reflecting a medium severity impact primarily on confidentiality. The vulnerability does not affect integrity or availability. No known exploits are reported in the wild. A patch is available from Microsoft to remediate this issue.
Potential Impact
An authorized local attacker can disclose sensitive information from Windows File Explorer, potentially leading to confidentiality breaches. There is no impact on system integrity or availability. The vulnerability requires local access and low attack complexity, but no user interaction.
Mitigation Recommendations
A patch is available from Microsoft to fix this vulnerability. It is recommended to apply the official update to Windows 10 Version 1607 to remediate the exposure of sensitive information. No additional mitigation steps are indicated by the vendor advisory.
CVE-2026-20939: 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.
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-20939) involves an exposure of sensitive information (CWE-200) in Windows File Explorer on Windows 10 Version 1607 (build 10.0.14393.0). An attacker with local privileges and low complexity requirements can access sensitive information without requiring user interaction. The CVSS 3.1 base score is 5.5, reflecting a medium severity impact primarily on confidentiality. The vulnerability does not affect integrity or availability. No known exploits are reported in the wild. A patch is available from Microsoft to remediate this issue.
Potential Impact
An authorized local attacker can disclose sensitive information from Windows File Explorer, potentially leading to confidentiality breaches. There is no impact on system integrity or availability. The vulnerability requires local access and low attack complexity, but no user interaction.
Mitigation Recommendations
A patch is available from Microsoft to fix this vulnerability. It is recommended to apply the official update to Windows 10 Version 1607 to remediate the exposure of sensitive information. No additional mitigation steps are indicated by the vendor advisory.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2025-12-04T20:04:16.338Z
- Cvss Version
- 3.1
- State
- PUBLISHED
Threat ID: 69668ae4a60475309f9ae202
Added to database: 1/13/2026, 6:11:48 PM
Last enriched: 4/3/2026, 12:50:56 PM
Last updated: 5/9/2026, 9:27:09 PM
Views: 150
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