VulnerabilityModified
CVE-2021-40456
Windows AD FS Security Feature Bypass Vulnerability
MEDIUM 5.3EPSS 2.34%
Does this matter?
Lower severity and a low EPSS score (2.34%). Track it; it rarely justifies an emergency change on its own.
Description
Windows AD FS Security Feature Bypass Vulnerability
- CVSS 3.1
- 5.3 MEDIUMCVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N
- EPSS
- 2.34% probability · 83th percentile
- CISA KEV
- Not listed
- Weakness
- CWE-863
- Affected
- microsoft/windows server · microsoft/windows server 2019 · microsoft/windows server 2022
- Source
- secure@microsoft.com
References
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-40456Patch, Vendor Advisory
- https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-40456Patch, Vendor Advisory
Source: NVD record, EPSS from FIRST.org, KEV from CISA. Refreshed daily.