CVE-2021-34420

Zoom Windows installation executable signature bypass

CVSS 4.7 MEDIUMEPSS 0.4%

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.

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

Affected products

Zoom Video Communications Inc · Zoom Client for Meetings for Windows

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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