High

Zoom Annotation Flaws Could Let a Meeting Participant Hijack Another Attendee's Client

The Hacker News

August 11, 2026 at 7:08 PM

Overview

A serious flaw in Zoom's annotation tool has been discovered, allowing participants in a meeting to potentially take control of each other's computers without any interaction from the victim. This vulnerability affects anyone sharing their screen, as well as those viewing the shared content, posing a significant risk during virtual meetings. Attackers could exploit this weakness without requiring the target to click anything or accept any prompts, making it particularly dangerous. The implications are severe, as it could lead to unauthorized access to sensitive information or malicious actions during meetings. Users and organizations should be aware of this risk and take necessary precautions while using Zoom for meetings.

Key Takeaways

Affected Systems: Zoom, specifically the annotation tool feature
Action Required: Users should disable the annotation feature if not needed and ensure they are using the latest version of Zoom to mitigate risks.
Timeline: Newly disclosed

Original Article Summary

Anyone sharing their screen on a Zoom call could have taken over the computers of everyone watching, and anyone watching could have taken over the presenter's. The flaw sat in the annotation tool, the feature that lets participants draw and type on a shared screen, and it asked nothing of the victim beyond being in the meeting. No click, no download, no prompt, and nothing on screen to show it

Impact

Zoom, specifically the annotation tool feature

Exploitation Status

The exploitation status is currently unknown. Monitor vendor advisories and security bulletins for updates.

Timeline

Newly disclosed

Remediation

Users should disable the annotation feature if not needed and ensure they are using the latest version of Zoom to mitigate risks.

Additional Information

This threat intelligence is aggregated from trusted cybersecurity sources. For the most up-to-date information, technical details, and official vendor guidance, please refer to the original article linked below.

Related Topics: This incident relates to Exploit, Vulnerability.

Read Original Article

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