CVE-2021-31955
Microsoft Windows Kernel Information Disclosure Vulnerability
Severity Score
5.5
*CVSS v3.1
Exploit Likelihood
*EPSS
Affected Versions
*CPE
Public Exploits
1
*Multiple Sources
Exploited in Wild
Yes
*KEV
Decision
Attend
*SSVC
Descriptions
Windows Kernel Information Disclosure Vulnerability
Una vulnerabilidad de Divulgación de Información en Windows Kernel
Microsoft Windows Kernel contains an unspecified vulnerability that allows for information disclosure. Successful exploitation allows attackers to read the contents of kernel memory from a user-mode process.
*Credits:
N/A
CVSS Scores
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:Attend
Exploitation
Automatable
Tech. Impact
* Organization's Worst-case Scenario
Timeline
- 2021-04-30 CVE Reserved
- 2021-06-08 CVE Published
- 2021-06-26 First Exploit
- 2021-11-03 Exploited in Wild
- 2021-11-17 KEV Due Date
- 2024-08-03 CVE Updated
- 2024-10-26 EPSS Updated
CWE
- CWE-200: Exposure of Sensitive Information to an Unauthorized Actor
- CWE-497: Exposure of Sensitive System Information to an Unauthorized Control Sphere
CAPEC
References (2)
| URL | Tag | Source |
|---|
| URL | Date | SRC |
|---|---|---|
| https://github.com/freeide/CVE-2021-31955-POC | 2021-06-26 |
| URL | Date | SRC |
|---|---|---|
| https://portal.msrc.microsoft.com/en-US/security-guidance/advisory/CVE-2021-31955 | 2024-07-03 |
| URL | Date | SRC |
|---|
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 10 Search vendor "Microsoft" for product "Windows 10" | 20h2 Search vendor "Microsoft" for product "Windows 10" and version "20h2" | - |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | Windows 10 Search vendor "Microsoft" for product "Windows 10" | 21h1 Search vendor "Microsoft" for product "Windows 10" and version "21h1" | - |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | Windows 10 Search vendor "Microsoft" for product "Windows 10" | 1809 Search vendor "Microsoft" for product "Windows 10" and version "1809" | - |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | Windows 10 Search vendor "Microsoft" for product "Windows 10" | 1909 Search vendor "Microsoft" for product "Windows 10" and version "1909" | - |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | Windows 10 Search vendor "Microsoft" for product "Windows 10" | 2004 Search vendor "Microsoft" for product "Windows 10" and version "2004" | - |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | Windows Server 2016 Search vendor "Microsoft" for product "Windows Server 2016" | 20h2 Search vendor "Microsoft" for product "Windows Server 2016" and version "20h2" | - |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | Windows Server 2016 Search vendor "Microsoft" for product "Windows Server 2016" | 2004 Search vendor "Microsoft" for product "Windows Server 2016" and version "2004" | - |
Affected
| ||||||
| Microsoft Search vendor "Microsoft" | Windows Server 2019 Search vendor "Microsoft" for product "Windows Server 2019" | - | - |
Affected
| ||||||