Actively exploited in the wild
Microsoft Windows Kernel Privilege Escalation Vulnerability
Microsoft - Windows · Listed in the CISA KEV since 2021-11-03. This indicates confirmed attacks in production environments.
Required action: Apply updates per vendor instructions.
CVE-2021-31979
HighCVSS 7.8KEVExploitation Probability (EPSS)
Very high risk91th percentile - higher than 91% of all known CVEs
Summary
Elevation of privilege vulnerability in Windows Kernel. Could be exploited to gain administrative privileges.
Risk Assessment
Potential full system compromise by a local attacker.
Recommendation
Install security updates released by Microsoft.
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A vulnerability in the Windows kernel allows elevation of privilege. This flaw can be exploited by a local attacker to gain higher privileges on the system.
Original NVD description (English source)
Windows Kernel Elevation of Privilege Vulnerability