Actively exploited in the wild
Microsoft Windows Kernel Exposed IOCTL with Insufficient Access Control Vulnerability
Microsoft - Windows · Listed in the CISA KEV since 2024-03-04. This indicates confirmed attacks in production environments.
Required action: Apply mitigations per vendor instructions or discontinue use of the product if mitigations are unavailable.
CVE-2024-21338
HighCVSS 7.8KEVExploitation Probability (EPSS)
Very high risk99th percentile - higher than 99% of all known CVEs
Summary
Elevation of privilege vulnerability in the Windows kernel, allowing an attacker to gain higher privileges on the system.
Risk Assessment
An attacker can gain administrator privileges, allowing full control over the system and access to all data.
Recommendation
Apply the security update from Microsoft for the Windows kernel and monitor the system for privilege escalation attempts.
Original NVD description (English source)
Windows Kernel Elevation of Privilege Vulnerability