Wire · technology
New Microsoft Defender 'ShieldCrash' zero-day grants SYSTEM access
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Cybersecurity
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United States
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Fusion42 · 9 September 2026 · Fusion42 review
A zero-day vulnerability named 'ShieldCrash' in Microsoft Defender has been discovered, allowing attackers to gain SYSTEM-level access on affected machines, posing critical security risks.
This Wire brief sits within Fusion42's coverage of Cybersecurity.
◆ ◆ The Wire takeaway
You must urgently reassess your endpoint security if you rely on Microsoft Defender. This vulnerability shifts defender software from protector to a potential liability, opening paths for attackers with system-level access.
◆ Coverage
1 source · 9 Sep 2026
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Cybersecuritycybersecurityzero-daymicrosoft-defenderprivilege-escalationendpoint-security