A newly published proof-of-concept (PoC) called ShieldCrash reveals an unpatched vulnerability in Microsoft Defender that allows a local attacker to gain arbitrary file-read access in the SYSTEM context. This disclosure, attributed to the researcher known as MSNightmare, comes shortly after Microsoft addressed an elevation-of-privilege flaw in the Microsoft Malware Protection Engine, tracked as CVE-2026-69414, referred […]
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