What’s Vulnerable › Vulnerabilities

CVE-2019-13450

• Severity: medium (CVSS 6.5 v3.0)
• Exploited in the wild: not listed in CISA KEV
• EPSS: 3.5% probability of exploitation in the next 30 days
• Public exploit or detection template: yes
• Published: 2019-07-09 · updated 2026-06-17
• Weakness: CWE-862

Description

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: 7.0.136380.0312
• Zoom Video Communications, Inc. Zoom Desktop Client for Windows: through 4.4.4

References

• http://www.securityfocus.com/bid/109082
• https://assets.zoom.us/docs/pdf/Zoom+Response+Video-On+Vulnerability.pdf
• https://blog.zoom.us/wordpress/2019/07/08/response-to-video-on-concern/
• https://bugs.chromium.org/p/chromium/issues/detail?id=951540
• https://medium.com/%40jonathan.leitschuh/zoom-zero-day-4-million-webcams-maybe-an-rce-just-get-them-to-visit-your-website-ac75c83f4ef5
• https://news.ycombinator.com/item?id=20387298
• https://twitter.com/moreati/status/1148548799813640193
• https://twitter.com/zoom_us/status/1148710712241295361
• http://www.securityfocus.com/bid/109082
• https://assets.zoom.us/docs/pdf/Zoom+Response+Video-On+Vulnerability.pdf
• https://blog.zoom.us/wordpress/2019/07/08/response-to-video-on-concern/
• https://bugs.chromium.org/p/chromium/issues/detail?id=951540

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