Microsoft Windows Kernel Stack-Based Buffer Overflow Vulnerability

Added to KEV
2022-03-28
Federal due date
2022-04-21
Vendor
Microsoft
Product
Windows
EPSS
92.1th percentile (score 0.077, as of 2026-06-08)
NVD CVSS v3.1
Ransomware use
Unknown
Upstream
https://nvd.nist.gov/vuln/detail/CVE-2010-4398

CISA short description

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.

Required action

Apply updates per vendor instructions.

EPSS percentile is the FIRST.org exploit-probability ranking as of the date noted above; it moves daily. CVSS reflects NVD's analysis at time of publication.