Windows Defender Zero-Day Vulnerability Has No Patch

Windows Defender zero-day vulnerability

A Windows Defender zero-day vulnerability disclosed on August 12, 2026 lets a low-privileged local attacker bypass Microsoft’s own patch for an earlier Defender flaw and escalate straight to SYSTEM. Tracked as CVE-2026-69414 and nicknamed ShieldBreak, the flaw still has no fix ten days after Microsoft assigned the CVE. Any Windows endpoint running default Defender is…

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