Microsoft patches Windows Shell zero-day exploited to bypass security warnings

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Microsoft addressed 1,411 vulnerabilities in its October 2026 security updates, including three zero-days. One of these, CVE-2026-96951, is a high-severity flaw in Windows Shell that bypasses Mark-of-the-Web security warnings. The vulnerability allows remote attackers to deliver crafted content that evades standard internet-file security prompts. Microsoft confirmed the bug is being actively exploited, though specific attack details are not public. Users are urged to apply the latest Windows security patches immediately.

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