CVE-2026-69846: CWE-190: Integer Overflow or Wraparound in Microsoft Windows 10 Version 1607

This vulnerability involves an integer overflow or wraparound condition in the Windows Secure Kernel Mode component of Microsoft Windows 10 Version 1607 and later. Exploitation requires local authorized access and can result in privilege escalation, allowing an attacker to gain higher privileges on the affected system. The vulnerability has a CVSS v3.1 base score of 8.2, indicating high severity with impacts on confidentiality, integrity, and availability. Multiple Windows 10 builds are affected, with patches released to address the issue. Microsoft has published an official advisory and provided fixes for the affected versions.

An authorized local attacker can exploit this integer overflow vulnerability to elevate privileges, potentially gaining administrative control over the affected system. This can lead to full compromise of confidentiality, integrity, and availability of the system.

Microsoft has released official patches to address this vulnerability. Users and administrators should apply the updates for their specific Windows 10 build as detailed in the Microsoft advisory at https://msrc.microsoft.com/update-guide/vulnerability/CVE-2026-69846. No additional mitigation is required beyond applying the official fix.