TECH Signal 547 2 feeds carried it
Zoom screen-sharing bug let people fully take over other devices on a call
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A vulnerability in Zoom’s screen-sharing lets attackers hijack another participant’s device without any action from the victim.
This flaw enables silent, full device takeover during a meeting, which could lead to data theft or further network intrusion. The exploit was created quickly using AI-assisted methods, showing how lowering the barrier to sophisticated attacks changes the threat landscape. Organizations must ensure timely patching and consider additional controls for screen-sharing sessions.
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The bug is triggered when the annotation tool is used while sharing a screen, allowing remote code execution.
It affects the Zoom Workspace client on Windows, macOS, iOS, Android, and Linux versions before the latest patch.
Zoom has released mitigations and advises users to apply the newest updates to close the hole.
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The reported change is that an attacker can gain complete control of a victim’s computer simply by having the victim share their screen and use the annotation tool, without requiring any click or warning from the victim. This shifts the risk from phishing or user error to a built-in feature of the meeting platform. The vulnerability works across the major desktop and mobile operating systems supported by Zoom Workspace.
Adopting the fix involves updating the Zoom Workspace client to the version that includes the patch, which may require coordination across fleets of devices and verification that the update does not break existing integrations. Organizations may also need to adjust meeting policies, such as disabling the annotation tool for participants who do not need it, to reduce exposure while rollout proceeds.
The exploit ceases to be effective once the latest Zoom Workspace update is applied, as the vendor has mitigated the specific screen-sharing flaw. Additionally, if screen-sharing is disabled or the annotation tool is restricted, the attack vector is removed, though this may limit legitimate collaboration features.
Only one feed carried this story, so there is no cross-source corroboration to confirm details such as the exact scope of affected versions or the observed use in the wild. Engineers should treat the information as preliminary and monitor official Zoom advisories for further validation.
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