CVE-2021-26734

Junction Delete leading to elevation of privilege

View on CVE.org

Published Oct 23, 2023 CVSS 3.1 · 4.4 Medium EPSS < 1% KEV · Not listed

Description

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.

Affected Products

Default status is the baseline for the product, each version can override it (e.g. patched versions marked unaffected).

Vendor Product Default status Versions

Zscaler

Client Connector

unaffected

Version	Status	Constraints
`0`	affected	< 3.4.0.124

Configuration 1 [-]

cpe:2.3:a:zscaler:client_connector:*:*:*:*:*:windows:*:*

No data.

No data available yet.

Remediation

No solution or workaround provided in the CVE record

Tracking

Sign in to view the affected projects.

Advisories

Source	ID	Title
EUVD	EUVD-2021-13521	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.

Metrics

No CVSS v4.0

Attack Vector Local

Attack Complexity High

Privileges Required Low

Scope Unchanged

Confidentiality Impact None

Integrity Impact None

Availability Impact High

User Interaction Required

No CVSS v3.0

No CVSS v2

This CVE is not in the KEV list.

Exploit prediction score: < 1% (0.154% probability within 30 days)

Exploitation none

Automatable no

Technical Impact partial

References

Link	Providers
https://help.zscaler.com/zscaler-client-connector/client-connector-app-release-summary-2021

History

Sep 18, 2024 8:30 AM Scoring metrics updated View changes

Type	Values Removed	Values Added
Metrics		ssvc `{'options': {'Automatable': 'no', 'Exploitation': 'none', 'Technical Impact': 'partial'}, 'version': '2.0.3'}`

Subscriptions

Zscaler Client Connector

Weaknesses

Sources

CVE record Updated: Sep 17, 2024, 1:46 PM

Status: PUBLISHED
Assigner: Zscaler
Published: Oct 23, 2023, 1:18 PM
Updated: Sep 17, 2024, 1:46 PM
Reserved: Feb 5, 2021, 8:34 PM

View source JSON

Vulnrichment Updated: Aug 3, 2024, 8:33 PM

Updated: Aug 3, 2024, 8:33 PM

NVD Updated: Jun 17, 2026, 3:43 AM

Status: Modified
Published: Oct 23, 2023, 2:15 PM
Modified: Jun 17, 2026, 3:43 AM

View source JSON

Red Hat No data

No data.

OpenCVE enrichment No data

No data.

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