CVE-2021-34420

Zoom Windows installation executable signature bypass

State: Published
Severity: 4.7 Medium
Published: Nov 11, 2021
Updated: Sep 16, 2024
Reserved: Jun 9, 2021

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.

Scores

CVSS	Score	Vector	Source
3.1	4.7 Medium	CVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N	Zoom

Weaknesses

The record names no weakness.

Affected Products

Product	Versions
Zoom Client for Meetings for WindowsZoom Video Communications Inc	before 5.5.4Affected

References

https://explore.zoom.us/en/trust/security/security-bulletin
https://medium.com/manomano-tech/a-red-team-operation-leveraging-a-zero-day-vulnerability-in-zoom-80f57fb0822e

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