CVE-2026-54112 is an Important-severity local privilege escalation vulnerability (CVSS 7.8) in the Windows Win32k driver, caused by a race condition and use-after-free weakness. The attack vector is local, requiring low privileges but high attack complexity, and successful exploitation could allow an attacker to gain SYSTEM-level privileges. Microsoft has released security updates to address this vulnerability; administrators should apply the relevant patches from the July 2026 Security Update Guide.
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