Advisory Published


First published: Fri Apr 03 2020(Updated: )

Zoom Client for Meetings through 4.6.9 uses the ECB mode of AES for video and audio encryption. Within a meeting, all participants use a single 128-bit key.

Credit: cve@mitre.org

Affected SoftwareAffected VersionHow to fix
Zoom Meetings<=4.6.9

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Frequently Asked Questions

  • What is the vulnerability ID for this Zoom security issue?

    The vulnerability ID for this Zoom security issue is CVE-2020-11500.

  • What is the severity rating of CVE-2020-11500?

    CVE-2020-11500 has a severity rating of 7.5 (high).

  • What is the description of CVE-2020-11500?

    CVE-2020-11500 is a vulnerability in Zoom Client for Meetings through version 4.6.9 which uses the ECB mode of AES for video and audio encryption, making it less secure.

  • Which software versions are affected by CVE-2020-11500?

    Zoom Meetings version 4.6.9 and below are affected by CVE-2020-11500.

  • How can I fix CVE-2020-11500?

    To fix CVE-2020-11500, you should update Zoom Client for Meetings to a version above 4.6.9 that does not use ECB mode for encryption, and enforce strong encryption protocols.


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