CVE-2019-13450: Ringcentral

Medium severity, CVSS 6.5. EPSS: 3.5% chance of exploitation in the next 30 days.

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.

Affected products

• Ringcentral Ringcentral: version 7.0.136380.0312 only
• Zoom Zoom: up to and including 4.4.4

Published 2019-07-09. Last modified 2026-06-17.