CVE-2021-34420 - CVE House
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Status published Medium CVE-2021-34420

Zoom Windows installation executable signature bypass

Vulnerability Description

The Zoom Client for Meetings for Windows installer before version 5.5.4 does not properly verify the signature of files with .msi, .ps1, and .bat extensions. This could lead to a malicious actor installing malicious software on a customer’s computer.

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:

  • Laurent Delosieres of ManoMano

References

More from Zoom Video Communications Inc

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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 Windows
Vulnerable Versions:
unspecified

Timeline

Official Publish: November 11th, 2021
Last Modified: September 16th, 2024
Added to House: July 21st, 2026

CVSS Vectors

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

Weaknesses (CWE)

No CWE data available

MITRE ATT&CK TTPs

No associated TTPs found for this vulnerability.