CVE-2010-4398VulnerabilityPublished 03/28/2022Updated 10/24/2026

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

Affects Microsoft WindowsSource CISA KEV

Severity

High

No CVSS score published yet

Exploitation: Actively exploited – in CISA KEV since 03/28/2022
KEV deadline: 04/21/2022
EPSS: 8.7% chance of exploitation in 30 days – higher than 95% of CVEs

What to do

CISA required action

Apply updates per vendor instructions.

nvd.nist.gov/vuln/detail/CVE-2010-4398 (opens in a new tab)

Description

CVE-2010-4398 is a stack-based buffer overflow vulnerability in the RtlQueryRegistryValues function within the win32k.sys component of Microsoft Windows. This flaw allows local users to escalate privileges and bypass the User Account Control (UAC) feature. The vulnerability has been exploited in the wild, indicating active use by attackers. No specific affected Windows versions or patch information is provided in the input data.

Summary

This vulnerability involves a stack-based buffer overflow in the RtlQueryRegistryValues function in the win32k.sys driver of Microsoft Windows. Exploitation by local users can lead to privilege escalation and bypass of UAC, potentially allowing unauthorized actions with elevated privileges. The vulnerability is known to be exploited in the wild, highlighting its practical risk. However, no patch or remediation details are included in the provided information.

Impact

Successful exploitation can result in local privilege escalation and bypass of UAC, enabling attackers to execute actions with elevated privileges on affected Windows systems. This increases the risk of unauthorized system modifications and potential compromise.

Mitigation

Patch status is not yet confirmed — check the vendor advisory for current remediation guidance. Since no patch or official fix information is provided, users should consult Microsoft security advisories for updates and apply any available patches promptly.

Weaknesses

CWE-119Buffer Errors (Memory Bounds) (opens in a new tab)

What to do

Description

AnalysisAI-generated, updated 10/24/2026, 11:11:12 UTC

Weaknesses

References

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