CVE-2026-96850: CWE-908: Use of Uninitialized Resource in Microsoft Windows 10 Version 1809
Description
CVE-2026-96850 is a medium severity vulnerability in Microsoft Windows 10 Version 1809 involving the use of an uninitialized resource in Windows Modern Device Management (MDM). This flaw allows an authorized local attacker to disclose sensitive information. The vulnerability affects multiple specific builds of Windows 10, and an official fix is available from Microsoft.
CVSS v3.1
Score 5.5medium
Affected software
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 11 Version 26H2
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-2026-96850) arises from the use of an uninitialized resource in Windows Modern Device Management (MDM) on Windows 10 Version 1809 and related builds. An authorized attacker with local access can exploit this flaw to disclose information. The CVSS 3.1 base score is 5.5 (medium severity), reflecting local attack vector, low complexity, required privileges, no user interaction, and high confidentiality impact without integrity or availability impact. Microsoft has published an official fix to address this issue.
Potential Impact
An authorized local attacker can leverage this vulnerability to disclose sensitive information from the affected Windows 10 systems. There is no impact on integrity or availability. No known exploits are reported in the wild at this time.
Mitigation Recommendations
An official fix is available from Microsoft. Users and administrators should apply the security updates provided by Microsoft for the affected Windows 10 versions as detailed in the Microsoft Security Response Center advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96850. No additional mitigation actions are indicated by the vendor.
Technical Details
- Data Version
- 5.2
- Assigner Short Name
- microsoft
- Date Reserved
- 2026-09-23T18:05:21.200Z
- Cvss Version
- 3.1
- State
- PUBLISHED
- Remediation Level
- official-fix
- Vendor Advisory Urls
- [{"url":"https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-96850","vendor":"Microsoft"}]
Threat ID: 6ace857d2cdf04f656a004a6
Added to database: 10/13/2026, 19:24:45 UTC
Last enriched: 10/14/2026, 00:05:01 UTC
Last updated: 10/14/2026, 00:05:01 UTC
Views: 2
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