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CVE-2026-83897 is a medium severity vulnerability in Microsoft Windows 10 Version 1607 and other specified versions. It involves exposure of sensitive system information to an unauthorized control sphere via the Windows Win32 Kernel Subsystem. The vulnerability allows an authorized local attacker with low privileges to disclose sensitive information. An official fix is available from Microsoft.

This vulnerability (CVE-2026-83897) affects multiple versions of Microsoft Windows 10, including Version 1607 and later builds up to specific patched versions. It is classified under CWE-497, indicating exposure of sensitive system information to unauthorized control spheres. The flaw exists in the Windows Win32 Kernel Subsystem and allows an authorized attacker with low privileges to locally disclose sensitive information. The CVSS v3.1 base score is 4.7 (medium severity), with attack vector local, high attack complexity, low privileges required, no user interaction, unchanged scope, and high confidentiality impact. Microsoft has released an official fix for this vulnerability.

CVE-2026-83897 is a medium severity vulnerability in Microsoft Windows 10 Version 1607 and other specified versions. It involves exposure of sensitive system information to an unauthorized control sphere via the Windows Win32 Kernel Subsystem. The vulnerability allows an authorized local attacker wi

CVE-2026-83897: CWE-497: Exposure of Sensitive System Information to an Unauthorized Control Sphere in Microsoft Windows 10 Version 1607

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