CVE-2026-20825: CWE-284: Improper Access Control in Microsoft Windows 10 Version 1809
Improper access control in Windows Hyper-V allows an authorized attacker to disclose information locally.
AI Analysis
Technical Summary
This vulnerability involves improper access control in the Windows Hyper-V component of Windows 10 Version 1809 (build 10.0.17763.0). An attacker with authorized high privileges can exploit this flaw to disclose information locally. The CVSS v3.1 base score is 4.4 (medium severity), reflecting local attack vector, low attack complexity, and no user interaction required. Microsoft has released an official fix to remediate this vulnerability.
Potential Impact
An authorized attacker with high privileges on the affected system can disclose sensitive information locally due to improper access control in Hyper-V. The vulnerability does not impact integrity or availability, and exploitation requires local access with elevated privileges.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20825 to remediate this vulnerability.
CVE-2026-20825: CWE-284: Improper Access Control in Microsoft Windows 10 Version 1809
Description
Improper access control in Windows Hyper-V allows an authorized attacker to disclose information locally.
CVSS v3.1
Score 4.4medium
Affected software
Weaknesses
AI-Powered Analysis
Machine-generated threat intelligence
Technical Analysis
This vulnerability involves improper access control in the Windows Hyper-V component of Windows 10 Version 1809 (build 10.0.17763.0). An attacker with authorized high privileges can exploit this flaw to disclose information locally. The CVSS v3.1 base score is 4.4 (medium severity), reflecting local attack vector, low attack complexity, and no user interaction required. Microsoft has released an official fix to remediate this vulnerability.
Potential Impact
An authorized attacker with high privileges on the affected system can disclose sensitive information locally due to improper access control in Hyper-V. The vulnerability does not impact integrity or availability, and exploitation requires local access with elevated privileges.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security update provided in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-20825 to remediate this vulnerability.
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-2026-20825","vendor":"Microsoft"}]
Threat ID: 69668adda60475309f9adfd8
Added to database: 01/13/2026, 18:11:41 UTC
Last enriched: 07/30/2026, 23:48:35 UTC
Last updated: 09/10/2026, 19:36:52 UTC
Views: 191
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