// For flags

CVE-2021-1721

.NET Core and Visual Studio Denial of Service Vulnerability

Severity Score

6.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

.NET Core and Visual Studio Denial of Service Vulnerability

Una Vulnerabilidad de DenegaciĆ³n de Servicio de .NET Core y Visual Studio

A flaw was found in dotnet. A recursion error when building X.509 certificate chains can lead to a stack overflow which could crash the system. The highest threat from this vulnerability is to system availability.

*Credits: N/A
CVSS Scores
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Network
Attack Complexity
Medium
Authentication
None
Confidentiality
None
Integrity
None
Availability
Partial
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2020-12-02 CVE Reserved
  • 2021-02-11 CVE Published
  • 2024-08-03 CVE Updated
  • 2024-09-22 EPSS Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-674: Uncontrolled Recursion
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"
.net
Search vendor "Microsoft" for product ".net"
>= 5.0 <= 5.0.2
Search vendor "Microsoft" for product ".net" and version " >= 5.0 <= 5.0.2"
-
Affected
Microsoft
Search vendor "Microsoft"
.net Core
Search vendor "Microsoft" for product ".net Core"
>= 2.1 <= 2.1.24
Search vendor "Microsoft" for product ".net Core" and version " >= 2.1 <= 2.1.24"
-
Affected
Microsoft
Search vendor "Microsoft"
.net Core
Search vendor "Microsoft" for product ".net Core"
>= 3.1 <= 3.1.11
Search vendor "Microsoft" for product ".net Core" and version " >= 3.1 <= 3.1.11"
-
Affected
Microsoft
Search vendor "Microsoft"
Powershell Core
Search vendor "Microsoft" for product "Powershell Core"
7.0
Search vendor "Microsoft" for product "Powershell Core" and version "7.0"
-
Affected
Microsoft
Search vendor "Microsoft"
Powershell Core
Search vendor "Microsoft" for product "Powershell Core"
7.1
Search vendor "Microsoft" for product "Powershell Core" and version "7.1"
-
Affected
Microsoft
Search vendor "Microsoft"
Visual Studio 2017
Search vendor "Microsoft" for product "Visual Studio 2017"
>= 15.0 <= 15.9
Search vendor "Microsoft" for product "Visual Studio 2017" and version " >= 15.0 <= 15.9"
-
Affected
Microsoft
Search vendor "Microsoft"
Visual Studio 2019
Search vendor "Microsoft" for product "Visual Studio 2019"
>= 16.0 <= 16.8
Search vendor "Microsoft" for product "Visual Studio 2019" and version " >= 16.0 <= 16.8"
-
Affected