CVE-2021-34420: Zoom Windows installation executable signature bypass
First published: Thu Nov 11 2021(Updated: )
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.
Credit: security@zoom.us
| Affected Software | Affected Version | How to fix |
|---|---|---|
| Zoom Meetings | <5.4.4 |
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Reference Links
Frequently Asked Questions
What is the severity of CVE-2021-34420?
CVE-2021-34420 is classified as a high severity vulnerability due to improper file signature verification.
How do I fix CVE-2021-34420?
To fix CVE-2021-34420, upgrade to the Zoom Client for Meetings for Windows version 5.5.4 or later.
What types of files are affected by CVE-2021-34420?
CVE-2021-34420 affects files with .msi, .ps1, and .bat extensions.
Who is impacted by CVE-2021-34420?
Any user of the Zoom Client for Meetings for Windows versions prior to 5.5.4 is impacted by CVE-2021-34420.
What can an attacker do with CVE-2021-34420?
An attacker exploiting CVE-2021-34420 could install malicious software on a user's computer.
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