CVE-2021-43226
Microsoft Windows Privilege Escalation Vulnerability
7.8
CVSS 3.1
3.1 %
EPSS (current)
2025-10-06
KEV addition
Yes
Ransomware
Timeline
Publication, first public exploit and KEV addition on a day axis.
Key facts
Vendor / product: Microsoft / Windows
Published: 2021-12-15 · Due (CISA): 2025-10-27
CWE: – · EU list: no
Exploit references (metadata only)
No public exploit references recorded.