CVE-2021-26423
.NET Core and Visual Studio Denial of Service Vulnerability
Severity Score
7.5
*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 Denegación de Servicio en .NET Core y Visual Studio
An infinite loop error was found in ASP.NET when processing WebSocket frames. The exploitation of this issue can cause high CPU resource consumption. The highest threat from this vulnerability is to system availability.
*Credits:
N/A
CVSS Scores
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Privileges Required
User Interaction
Scope
Confidentiality
Integrity
Availability
Attack Vector
Attack Complexity
Authentication
Confidentiality
Integrity
Availability
* Common Vulnerability Scoring System
SSVC
- Decision:-
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2021-01-29 CVE Reserved
- 2021-08-12 CVE Published
- 2024-07-04 EPSS Updated
- 2024-08-03 CVE Updated
- ---------- Exploited in Wild
- ---------- KEV Due Date
- ---------- First Exploit
CWE
- CWE-835: Loop with Unreachable Exit Condition ('Infinite Loop')
CAPEC
References (3)
| URL | Tag | Source |
|---|
| URL | Date | SRC |
|---|
| URL | Date | SRC |
|---|---|---|
| https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-26423 | 2023-12-28 |
| URL | Date | SRC |
|---|---|---|
| https://access.redhat.com/security/cve/CVE-2021-26423 | 2021-08-12 | |
| https://bugzilla.redhat.com/show_bug.cgi?id=1990295 | 2021-08-12 |
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 <= 5.0.8 Search vendor "Microsoft" for product ".net" and version " >= 5.0 <= 5.0.8" | - |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | .net Core Search vendor "Microsoft" for product ".net Core" | >= 2.1 <= 2.1.28 Search vendor "Microsoft" for product ".net Core" and version " >= 2.1 <= 2.1.28" | - |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | .net Core Search vendor "Microsoft" for product ".net Core" | >= 3.1 <= 3.1.17 Search vendor "Microsoft" for product ".net Core" and version " >= 3.1 <= 3.1.17" | - |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | Powershell Core Search vendor "Microsoft" for product "Powershell Core" | >= 7.0 < 7.0.7 Search vendor "Microsoft" for product "Powershell Core" and version " >= 7.0 < 7.0.7" | - |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | Powershell Core Search vendor "Microsoft" for product "Powershell Core" | >= 7.1 < 7.1.4 Search vendor "Microsoft" for product "Powershell Core" and version " >= 7.1 < 7.1.4" | - |
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 <= 16.10 Search vendor "Microsoft" for product "Visual Studio 2019" and version " >= 16.0 <= 16.10" | - |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | Visual Studio 2019 Search vendor "Microsoft" for product "Visual Studio 2019" | 8.10 Search vendor "Microsoft" for product "Visual Studio 2019" and version "8.10" | macos |
Affected
| ||||||