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2026-09-08
Windows Update Stack Privilege Escalation Vulnerability via Link Following (CVE-2026-81963) Technical Advisory
[Affected Scope] Microsoft Windows operating systems utilizing the Windows Update Stack
[Impact] A local authorized attacker can exploit improper link resolution to elevate privileges to SYSTEM, leading to complete system compromise
[Mitigation] Apply the official Microsoft security updates immediately, or restrict local symbolic link creation privileges as a temporary mitigation