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In the Zoom Client through 4.4.4 and RingCentral 7.0.136380.0312 on macOS, remote attackers can force a user to join a video call with the video camera active. This occurs because any web site can interact with the Zoom web server on localhost port 19421 or 19424. NOTE: a machine remains vulnerable if the Zoom Client was installed in the past and then uninstalled. Blocking exploitation requires additional steps, such as the ZDisableVideo preference and/or killing the web server, deleting the ~/.zoomus directory, and creating a ~/.zoomus plain file.
| Product | Vendor Advisory | Solution File | Added | Published |
|---|---|---|---|---|
| Zoom | — | Disable the ability for Zoom to turn on video when joining a meetingUpgrade to Zoom version 4.4.53932.0709 | Jul 9, 2019 | Jul 9, 2019 |
| Zoom Zoom | — | Upgrade to the latest version of Zoom Zoom | Feb 9, 2026 | Jul 9, 2019 |
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