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CVE-2026-83876 is a use-after-free vulnerability in the Windows Shell component of Microsoft Windows 10 Version 1607 and related versions. It allows an authorized local attacker to elevate privileges. The vulnerability has a high severity rating with a CVSS score of 7.8. Microsoft has issued an official fix for this vulnerability.

This vulnerability involves a use-after-free condition in the Windows Shell, which can be exploited by an authorized local attacker to elevate privileges on affected Windows 10 versions. The flaw is tracked as CWE-416. The CVSS 3.1 base score is 7.8, indicating high severity, with attack vector local, low attack complexity, and requiring low privileges with no user interaction. Confidentiality, integrity, and availability impacts are all high. Microsoft has published an official fix and remediation guidance is available through their security update guide.

CVE-2026-83876 is a use-after-free vulnerability in the Windows Shell component of Microsoft Windows 10 Version 1607 and related versions. It allows an authorized local attacker to elevate privileges. The vulnerability has a high severity rating with a CVSS score of 7.8. Microsoft has issued an offi

CVE-2026-83876: CWE-416: Use After Free in Microsoft Windows 10 Version 1607

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