// For flags

CVE-2021-43211

Windows 10 Update Assistant Elevation of Privilege Vulnerability

Severity Score

5.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

-
*SSVC
Descriptions

Windows 10 Update Assistant Elevation of Privilege Vulnerability

Una Vulnerabilidad de ElevaciĆ³n de Privilegios en el Asistente de ActualizaciĆ³n de Windows 10. Este CVE ID es diferente de CVE-2021-42297

This vulnerability allows local attackers to escalate privileges on affected installations of Microsoft Windows. An attacker must first obtain the ability to execute low-privileged code on the target system in order to exploit this vulnerability.
The specific flaw exists within Windows Update Assistant. By creating a directory junction, an attacker can abuse Windows Update Assistant to delete a file. An attacker can leverage this vulnerability to escalate privileges and execute arbitrary code in the context of Administrator.

*Credits: Abdelhamid Naceri (halov)
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
None
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
High
Attack Vector
Local
Attack Complexity
Low
Privileges Required
Low
User Interaction
Required
Scope
Unchanged
Confidentiality
High
Integrity
High
Availability
High
Attack Vector
Local
Attack Complexity
Low
Authentication
None
Confidentiality
None
Integrity
Complete
Availability
Complete
* Common Vulnerability Scoring System
SSVC
  • Decision:-
Exploitation
-
Automatable
-
Tech. Impact
-
* Organization's Worst-case Scenario
Timeline
  • 2021-10-27 CVE Published
  • 2021-11-02 CVE Reserved
  • 2023-04-09 EPSS Updated
  • 2024-08-04 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-269: Improper Privilege Management
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 10 Update Assistant
Search vendor "Microsoft" for product "Windows 10 Update Assistant"
--
Affected