ACTIVELY EXPLOITED

CVE-2010-4398: Microsoft Windows Kernel Stack-Based Buffer Overflow Vulnerability

Facts
VendorMicrosoft
ProductWindows
Actively exploitedYes
Added to CISA KEV28 Mar 2022
CISA federal deadline21 Apr 2022
Weakness (CWE)CWE-119

Required action (CISA's text)

Apply updates per vendor instructions.

Description (NVD)

Stack-based buffer overflow in the RtlQueryRegistryValues function in win32k.sys in Microsoft Windows allows local users to gain privileges, and bypass the User Account Control (UAC) feature.

SOURCES

Other Microsoft flaws

Data from NVD, CISA KEV, FIRST EPSS and vendor advisories. Updated 10 Nov 2026.