CVE-2021-40456

EUVD-2021-27633
Windows AD FS Security Feature Bypass Vulnerability
ProviderTypeBase ScoreAtk. VectorAtk. ComplexityPriv. RequiredVector
NISTPrimary
5.3 MEDIUM
NETWORK
LOW
NONE
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
microsoftCNA
5.3 MEDIUM
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N/E:U/RL:O/RC:C
Base Score
CVSS 3.x
EPSS Score
Percentile: 79%
Affected Products (NVD)
VendorProductVersion
microsoftwindows_server_2019
-
microsoftwindows_server_2022
*
𝑥
= Vulnerable software versions
Windows Releases
Platform
Version
Windows Server
2004 Server Core
20H2 Server Core
Windows Server 2019
Server Core
Standard
Windows Server 2022
Server Core
Standard