CVE-2021-40456

MEDIUM

Windows AD FS - Privilege Escalation

Title source: llm
STIX 2.1

Description

Windows AD FS Security Feature Bypass Vulnerability

References (1)

Core 1
Core References

Scores

CVSS v3 5.3
EPSS 0.0221
EPSS Percentile 80.4%
Attack Vector NETWORK
CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

CISA SSVC

Vulnrichment
Exploitation none
Automatable yes
Technical Impact partial

Details

CWE
CWE-863
Status published
Products (3)
microsoft/windows_server 20h2
microsoft/windows_server_2019
microsoft/windows_server_2022
Published Oct 13, 2021
Tracked Since Feb 18, 2026