SecurityAug 11, 2026, 2:45 PM

‘Zoomsday’ hack uncovered using fewer than 20 AI prompts

30-second summary

Researchers demonstrated a Zoom vulnerability that allowed attackers to hijack devices using fewer than 20 AI prompts. The flaw, found in the annotation feature, has since been patched.

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‘Zoomsday’ hack uncovered using fewer than 20 AI prompts
Key takeaways
  • Researchers exploited a Zoom vulnerability using fewer than 20 AI prompts to hijack devices during meetings.
  • The flaw was in Zoom’s annotation feature, allowing attackers to run malicious code on victims' systems.
  • Zoom has patched the vulnerability, but the incident highlights risks in AI-enhanced collaboration tools.
  • The attack demonstrates how AI can be weaponized for cybersecurity breaches.
Full story

Security researchers at A Security discovered a critical vulnerability in Zoom’s annotation feature that could allow attackers to execute malicious code on victims' devices during meetings. The exploit required fewer than 20 prompts on publicly available AI models, demonstrating how AI can be weaponized for cyberattacks.

The flaw enabled attackers to join or host meetings and manipulate shared screens, potentially stealing data, activating cameras or microphones, or installing malware. Zoom has since patched the vulnerability, but the incident underscores the growing intersection of AI and cybersecurity threats.

The attack leveraged Zoom’s real-time collaboration tools, which are widely used in professional and educational settings. Researchers emphasized that such vulnerabilities could become more common as AI tools are integrated into everyday software.

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Why this matters
Developers

Developers must audit AI-integrated features for security risks.

Businesses

Businesses using Zoom or similar tools should verify patches and assess AI-related vulnerabilities.

Everyone

The incident raises concerns about AI’s role in enabling cyberattacks.

Glossary
annotation feature
A Zoom tool allowing users to draw or write on shared screens during meetings.
AI prompts
Input commands given to AI models to generate responses or actions.
Sources · 1
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