CVE-2021-34409 - CVE House
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Status published High CVE-2021-34409

Zoom Client Installer Local Privilege Escalation

Vulnerability Description

It was discovered that the installation packages of the Zoom Client for Meetings for MacOS (Standard and for IT Admin) installation before version 5.2.0, Zoom Client Plugin for Sharing iPhone/iPad before version 5.2.0, and Zoom Rooms for Conference before version 5.1.0, copy pre- and post- installation shell scripts to a user-writable directory. In the affected products listed below, a malicious actor with local access to a user's machine could use this flaw to potentially run arbitrary system commands in a higher privileged context during the installation process.

Impact Analysis

Refer to official advisory for detailed impact metrics.

Remediation

Ensure systems are updated to the latest vendor-supplied patch levels.

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Credits & Attribution

The following person or organization is credited with identifying this vulnerability, as recorded in the NVD database:

  • Lockheed Martin Red Team

References

More from Zoom Video Communications Inc

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Improper trust boundary implementation for SMB in Zoom Clients
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CVE-2023-28596
Local Privilege Escalation in Zoom for macOS Installers
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CVE-2023-22883
Local Privilege Escalation in Zoom for Windows Installers
High 7.2
CVE-2023-22882
Denial of Service in Zoom Clients
Medium 6.5
CVE-2023-22881
Denial of Service in Zoom Clients
Medium 6.5

Affected Vendor

Zoom Video Communications Inc

View all reports →

Affected Software

Zoom Client for Meetings for MacOS (Standard and for IT Admin), Zoom Client Plugin for Sharing iPhone/iPad, Zoom Rooms for Conference
Vulnerable Versions:
unspecified

Timeline

Official Publish: September 27th, 2021
Last Modified: September 16th, 2024
Added to House: July 21st, 2026

CVSS Vectors

V3: CVSS:3.1/AV:L/AC:H/PR:L/UI:N/S:C/C:H/I:H/A:H

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.