VULNERABILITY INTELLIGENCE

CVE-2021-34420

CVSS score4.7 MEDIUM
EPSS probability0.41%
CISA KEVNot currently listed
Published2021-11-11
Last modified2026-06-17
CVSS vectorCVSS:3.1/AV:N/AC:L/PR:N/UI:R/S:C/C:N/I:L/A:N

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.

Weakness classification

  • CWE-347: Improper Verification of Cryptographic Signature

Primary references