NewsPublished 4 Jun 2026

Gemini Voice Assistant Hijacked via Messaging Notifications

Source SecurityWeek

Description

Attackers could have triggered dangerous actions, including controlling smart home devices via Google Home and starting Zoom video calls. The post Gemini Voice Assistant Hijacked via Messaging Notifications appeared first on SecurityWeek .

Impact

The vulnerability allowed attackers to hijack the Gemini voice assistant to perform unauthorized actions including controlling smart home devices, initiating Zoom calls, sending deceptive messages, and establishing persistent control by manipulating the assistant's memory. These actions could be triggered without user knowledge through trusted messaging notifications. The attack was particularly risky in hands-free scenarios such as driving. However, the vulnerability was patched by Google in November 2025, mitigating these risks.

Defensive guidance

Google released an official patch in November 2025 that improved the content classifier to prevent indirect prompt injections via messaging notifications. Users and organizations should ensure their Gemini voice assistant software is updated to the latest version containing this fix. Since this is not a cloud service, manual updates or patches are required. No further immediate action is required beyond applying the official patch.

References

securityweek.com/gemini-voice-assistant-hijacked-via-messaging-notifications/ (opens in a new tab)

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Description

AI analysisMachine-generated, updated 4 Jun 2026, 13:03 UTC

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