KEV · Actively exploited

CVE-2021-43226

HIGH 7.8 Vendor bulletin scale — NVD CVSS pending KEV Published on 2021-12-14

Windows Common Log File System Driver Elevation of Privilege Vulnerability

EPSS 3.07% above median percentile 86.4%

CISA Known Exploited Vulnerability

Added to KEV: 2025-10-06
Remediation deadline: 2025-10-27
Required action: Apply mitigations per vendor instructions, follow applicable BOD 22-01 guidance for cloud services, or discontinue use of the product if mitigations are unavailable.
Ransomware: Unknown (not documented by CISA)

This CVE is resolved by the following OS security releases. Update the OS to at least the listed version.