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Meta's Muse AI Assistant Hit With Serious 0-Day Flaw

Security researchers discover a critical 0-day vulnerability in Meta's highly privileged Muse AI assistant, vulnerable to ClickFix attacks.

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Inewgen
22 Sep 2026Source: Ars Technica2 min read (0 views)
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Meta's Muse AI Assistant Hit With Serious 0-Day Flaw

Stock photo for illustration only, not from the actual event

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  • Muse is Meta's new AI assistant equipped with extraordinarily high system privileges.
  • A severe 0-day vulnerability has been discovered targeting this privileged framework.
  • A simple ClickFix attack represents just one method capable of completely hijacking the agent.

The cybersecurity community has raised alarms following the disclosure of a critical 0-day vulnerability affecting Muse, the newly introduced artificial intelligence assistant developed by Meta. This AI system stands out due to its architecture, which grants it extraordinarily high privileged access to system resources compared to standard consumer AI tools.

While these elevated privileges are designed to enable advanced functionalities, they simultaneously introduce a massive security vector that malicious actors can exploit. Security analysts have pointed out that a straightforward ClickFix attack serves as a viable pathway to completely compromise and hijack the AI assistant.

ClickFix attacks typically rely on social engineering tactics, tricking users into executing fraudulent administrative scripts under the guise of fixing routine browser or system errors. When combined with an AI agent possessing deep system privileges like Muse, the potential impact of such an exploit escalates dramatically.

This major discovery highlights the escalating security challenges facing tech giants as autonomous AI agents are granted deeper integrations and broader permissions across corporate and cloud environments, necessitating urgent patch deployments.

Source: Ars Technica

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