CVE-2021-34420 Zoom Windows installation executable signature bypass

2021-11-1200:00:00

Zoom

www.cve.org

4.7 Medium

CVSS3

Attack Vector

NETWORK

Attack Complexity

LOW

Privileges Required

NONE

User Interaction

REQUIRED

Scope

CHANGED

Confidentiality Impact

NONE

Integrity Impact

LOW

Availability Impact

NONE

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

0.001 Low

EPSS

Percentile

34.4%

JSON

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.

CNA Affected

[
  {
    "product": "Zoom Client for Meetings for Windows",
    "vendor": "Zoom Video Communications Inc",
    "versions": [
      {
        "lessThan": "5.5.4",
        "status": "affected",
        "version": "unspecified",
        "versionType": "custom"
      }
    ]
  }
]