// For flags

CVE-2021-26734

Junction Delete leading to elevation of privilege

Severity Score

5.5
*CVSS v3.1

Exploit Likelihood

*EPSS

Affected Versions

*CPE

Public Exploits

0
*Multiple Sources

Exploited in Wild

-
*KEV

Decision

Track
*SSVC
Descriptions

Zscaler Client Connector Installer on Windows before version 3.4.0.124 improperly handled directory junctions during uninstallation. A local adversary may be able to delete folders in an elevated context.

El instalador de Zscaler Client Connector en Windows anterior a la versión 3.4.0.124 manejaba incorrectamente las uniones de directorios durante la desinstalación. Un adversario local puede eliminar carpetas en un contexto elevado.

*Credits: Benjamin Dubost, LMCO
CVSS Scores
Attack Vector
Local
Attack Complexity
Low
Privileges Required
None
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
High
Availability
None
Attack Vector
Local
Attack Complexity
High
Privileges Required
Low
User Interaction
Required
Scope
Unchanged
Confidentiality
None
Integrity
None
Availability
High
* Common Vulnerability Scoring System
SSVC
  • Decision:Track
Exploitation
None
Automatable
No
Tech. Impact
Partial
* Organization's Worst-case Scenario
Timeline
  • 2021-02-05 CVE Reserved
  • 2023-10-23 CVE Published
  • 2023-10-27 EPSS Updated
  • 2024-09-17 CVE Updated
  • ---------- Exploited in Wild
  • ---------- KEV Due Date
  • ---------- First Exploit
CWE
  • CWE-269: Improper Privilege Management
CAPEC
  • CAPEC-233: Privilege Escalation
Affected Vendors, Products, and Versions
Vendor Product Version Other Status
Vendor Product Version Other Status <-- --> Vendor Product Version Other Status
Zscaler
Search vendor "Zscaler"
 Client Connector
Search vendor "Zscaler" for product "Client Connector"
 < 3.4.0.124
Search vendor "Zscaler" for product "Client Connector" and version " < 3.4.0.124"
windows
Affected