CVE-2011-1886: Microsoft Windows XP

Low severity, CVSS 2.1. EPSS: 1.9% chance of exploitation in the next 30 days.

win32k.sys in the kernel-mode drivers in Microsoft Windows XP SP3 does not properly validate the arguments to functions, which allows local users to read arbitrary data from kernel memory via a crafted application that triggers a NULL pointer dereference, aka "Win32k Incorrect Parameter Validation Allows Information Disclosure Vulnerability."

Affected products

• Microsoft Windows XP: any version

Published 2011-07-13. Last modified 2026-06-16.