A flaw in Zoom's screen annotation feature could have allowed any meeting participant to hijack the client of another attendee, including the presenter, without any user interaction. The vulnerability required no click, download, or visible prompt, making it a fully zero-click, in-meeting attack vector. This poses significant risk to organizations relying on Zoom for internal and external communications, including those coordinating distributed teams or automated workflows via meeting integrations.
Updated Aug 12, 2026