# ShieldCrash Zero-Day: Defender CVE-2026-69414 Patch Bypass

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## Article Metadata
- Title: ShieldCrash Zero-Day: Defender CVE-2026-69414 Patch Bypass
- Summary: Technical teardown of ShieldCrash: bypassing Microsoft Defender's ShieldBreak patch (CVE-2026-69414) via TOCTOU NTFS junctions. Exploit flow and Sigma rules.
- Published: Sep 19, 2026, 2:07 AM EDT
- Updated: Sep 19, 2026, 2:07 AM EDT
- Category: Exploits
- Primary topic: Endpoint Security
- Authors: Alex Kim
- Read time: 7 min
- Language: en_US
- Publication time zone: America/New_York (U.S. Eastern Time)
- Access: Free to read

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