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Zoom Annotation Flaws Could Let a Meeting Participant Hijack Another Attendee's Client
The Hacker News • • general
Key Points:
- A critical zero-click vulnerability in Zoom's annotation tool allowed participants to take over other users' computers during meetings without any interaction or visible indication.
- The security flaws, identified as CVE-2026-53413, CVE-2026-53414, and CVE-2026-53415, were patched in June and July before public disclosure, with no reported exploitation to date.
- The vulnerabilities stem from improper handling of annotation data, including unchecked buffer sizes and missing sender verification, enabling buffer overflows and use-after-free exploits.
- The research was conducted by Israeli startup "A Security," which developed a working exploit within a day using publicly available AI models, highlighting the lowered barriers to creating such attacks.
- Zoom's official vulnerability ratings differ from the research firm's, and the disclosure raises concerns about AI's role in accelerating offensive security capabilities, coinciding with OpenAI's recent release of a gated cybersecurity model.
