// For flags

CVE-2021-40456

Windows AD FS Security Feature Bypass Vulnerability

Severity Score

5.3
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Attend
*SSVC
Descriptions

Windows AD FS Security Feature Bypass Vulnerability

Una vulnerabilidad de Omisión de la Funcionalidad de Seguridad de Windows AD FS

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
Low
Integrity
None
Availability
None
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
None
Scope
Unchanged
Confidentiality
High
Integrity
None
Availability
None
Attack Vector
Network
Attack Complexity
Low
Authentication
None
Confidentiality
Partial
Integrity
None
Availability
None
* Common Vulnerability Scoring System
SSVC
  • Decision:Attend
Exploitation
None
Automatable
Yes
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2021-09-02 CVE Reserved
  • 2021-10-13 CVE Published
  • 2024-08-04 CVE Updated
  • 2024-10-16 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-863: Incorrect Authorization
CAPEC
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Microsoft
Search vendor "Microsoft"
 Windows Server
Search vendor "Microsoft" for product "Windows Server"
 20h2
Search vendor "Microsoft" for product "Windows Server" and version "20h2"
-
Affected
Microsoft
Search vendor "Microsoft"
 Windows Server 2019
Search vendor "Microsoft" for product "Windows Server 2019"
--
Affected
Microsoft
Search vendor "Microsoft"
 Windows Server 2022
Search vendor "Microsoft" for product "Windows Server 2022"
*-
Affected