Vulnerability Spotlight: Use-after-free vulnerability in Windows 10 win32kbase

Summary: Marcin Towalski of Cisco Talos discovered a use-after-free vulnerability in Windows 10 version 10.0.19033.1, where a Win32k component fails to properly handle objects in memory. Exploitation can lead to arbitrary code execution in the kernel context and elevation of privileges, and the flaw occurs only on x86 machines; Microsoft disclosed it in this month's Patch Tuesday.
Why it matters: Kernel-level code execution means an attacker who lands this bug moves past the boundary most endpoint controls are built to defend, and the x86-only scope means a mixed fleet can leave part of your estate exposed even after patching begins.

Read the original at Cisco Talos ↗

Topics: Vulnerabilities & Patching
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