Meta Issues Patch for Muse macOS App Following Zero‑Day Flaw That Could Seize AI Agent

Meta issued a security patch for the Muse app on macOS after a zero‑day flaw was discovered that might let an attacker take over the integrated AI assistant. The update, made available early Tuesday, turns off the undocumented setting that served as the exploit’s entry point.

Independent researcher Patrick Wardle uncovered the defect, noting that the concealed configuration allowed outside code to send commands to the Muse agent without the user’s approval. If the option were switched on, a threat actor could steer the AI to carry out tasks from stealing data to tampering with the system, prompting worries over privacy and overall platform stability.

Meta acknowledged that the flaw existed in the latest macOS version of Muse and that it had not been publicly revealed before Wardle’s report. Its security division labeled the problem a high‑severity bug, pointing out that while the exploit needs local device access, it could be used in focused attacks on prominent individuals or businesses that depend on Muse for automating workflows.

In a short comment, Meta stated the update “effectively removes the undocumented setting and restores the intended security boundaries of the Muse AI agent.” The company further encouraged every Mac owner to install the fix right away via the normal software‑update mechanism, warning that postponing the install could keep systems exposed to attack.

Wardle’s revelation underscores an emerging pattern in which AI‑powered functionalities turn into fresh attack vectors. As programmers weave conversational agents more tightly into operating systems, the codebase’s intricacy grows, opening doors for obscure settings and unforeseen actions. Security professionals note that this case highlights the need for comprehensive code reviews and clear documentation of AI parts.

Although Meta has not revealed if the flaw was ever weaponized, its rapid patch aims to curb any possible repercussions. Analysts will monitor how fast other services—especially those that embed AI assistants—react to comparable threats. The incident serves as a reminder that even affluent tech powerhouses must stay alert as AI functions mature and become more intertwined with routine software.