CVE-2026-68831: CWE-552: Files or Directories Accessible to External Parties in Microsoft Windows 10 Version 1607
Description
CVE-2026-68831 is a vulnerability in Microsoft Windows 10 Version 1607 related to files or directories accessible to external parties via the Windows Defender Firewall Service. An authorized attacker with local access can disclose sensitive information. The vulnerability has a medium severity with a CVSS score of 5.5. Official patches are available from Microsoft to address this issue.
CVSS v3.1
Score 5.5medium
Affected software
Microsoft
Windows 10 Version 1607
Microsoft
Windows 10 Version 1809
Microsoft
Windows 10 Version 21H2
Microsoft
Windows 10 Version 22H2
Microsoft
Windows 11 version 23H2
Microsoft
Windows 11 Version 23H2
Microsoft
Windows 11 Version 24H2
Microsoft
Windows 11 Version 25H2
Microsoft
Windows 11 version 26H1
Microsoft
Windows Server 2012
Microsoft
Windows Server 2012 (Server Core installation)
Microsoft
Windows Server 2012 R2
Microsoft
Windows Server 2012 R2 (Server Core installation)
Microsoft
Windows Server 2016
Microsoft
Windows Server 2016 (Server Core installation)
Microsoft
Windows Server 2019
Microsoft
Windows Server 2019 (Server Core installation)
Microsoft
Windows Server 2022
Microsoft
Windows Server 2025
Microsoft
Windows Server 2025 (Server Core installation)
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability (CVE-2026-68831) involves improper access controls in the Windows Defender Firewall Service on Microsoft Windows 10 Version 1607 and related builds. It allows an authorized local attacker to access files or directories that should not be accessible, leading to information disclosure. The CVSS 3.1 vector indicates the attack requires local access with low complexity and privileges, no user interaction, and impacts confidentiality with no impact on integrity or availability. Microsoft has published an official fix for this vulnerability.
Potential Impact
An authorized attacker with local access can disclose sensitive information by accessing files or directories that are improperly exposed through the Windows Defender Firewall Service. This compromises confidentiality but does not affect integrity or availability of the system.
Mitigation Recommendations
Microsoft has released official patches to fix this vulnerability. It is recommended to apply the available security updates for the affected Windows 10 versions as listed in the vendor advisory. No additional mitigation steps are indicated beyond applying the official fix.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-07-31T16:47:02.143Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-68831","vendor":"Microsoft"}]
Threat ID: 6aa044d1acd9273b49fa7c1c
Added to database: 09/08/2026, 17:24:33 UTC
Last enriched: 10/16/2026, 20:54:02 UTC
Last updated: 10/23/2026, 15:10:14 UTC
Views: 45
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