CVE-2021-40456 — MEDIUM (5.3)

Vulnerability Description

Windows AD FS Security Feature Bypass Vulnerability

CVSS Score

5.3

MEDIUM

CVSS:3.1/AV:N/AC:L/PR:N/UI:N/S:U/C:L/I:N/A:N

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

NONE

Scope

UNCHANGED

Confidentiality

LOW

Integrity

NONE

Availability

NONE

Affected Products

Vendor	Product	Versions
Microsoft	Windows Server	20h2
Microsoft	Windows Server 2019	-
Microsoft	Windows Server 2022	All versions

Related Weaknesses (CWE)

CWE-863

References

https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-4045PatchVendor Advisory
https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-4045PatchVendor Advisory

FAQ

What is CVE-2021-40456?

CVE-2021-40456 is a vulnerability with a CVSS score of 5.3 (MEDIUM). Windows AD FS Security Feature Bypass Vulnerability

How severe is CVE-2021-40456?

CVE-2021-40456 has been rated MEDIUM with a CVSS base score of 5.3/10. Review the CVSS metrics above for detailed severity breakdown.

Is there a patch for CVE-2021-40456?

Check the references section above for vendor advisories and patch information. Affected products include: Microsoft Windows Server, Microsoft Windows Server 2019, Microsoft Windows Server 2022.