CVE-2018-8639: high-severity vulnerability in Microsoft Windows 7
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A flaw in Windows' Win32k component allows a local user to gain higher privileges (administrator rights) by exploiting improper memory handling. This is dangerous because an attacker with basic user access can take complete control of the system.
Win32k fails to properly handle object references in memory, allowing a local attacker to trigger a use-after-free or similar memory corruption condition. Exploitation requires local code execution context; successful exploitation results in elevation to SYSTEM privileges, enabling full system compromise.
The full analysis of this CVE is available in Portuguese →
In the same product, most dangerous first.