CVE-2021-43893

high-risk
Published 2021-12-15

Windows Encrypting File System (EFS) Elevation of Privilege Vulnerability

Do I need to act?

~
6.8% chance of exploitation in next 30 days
EPSS score — moderate exploit probability
-
Not on CISA KEV list
No confirmed active exploitation reported to CISA
?
Patch status unknown
Check vendor advisories for fix availability and mitigation guidance
7
CVSS 7.5/10 High
NETWORK / HIGH complexity

Affected Products (20)

Affected Vendors

Microsoft

References (4)

Third Party Advisory http://packetstormsecurity.com/files/165560/Microsoft-Windows-EFSRPC-Arbitrary-F...
Patch https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-4389...
Third Party Advisory http://packetstormsecurity.com/files/165560/Microsoft-Windows-EFSRPC-Arbitrary-F...
Patch https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-4389...
55
/ 100
high-risk
Severity 22/34 · High
Exploitability 9/34 · Low
Exposure 24/34 · High