Windows Defender Zero-Day Vulnerability Has No Patch

By Editorial Team | August 25, 2026
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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Nightmare Eclipse Windows Zero-Day Trilogy

By Editorial Team | July 15, 2026
Nightmare Eclipse Windows zero-day

The Nightmare Eclipse Windows zero-day trilogy has moved from proof-of-concept code on GitHub to a confirmed, real-world intrusion: Huntress found BlueHammer, RedSun, and UnDefend deployed together in one attack chain that started with a compromised FortiGate VPN appliance. What Happened A researcher operating under the handle “Nightmare Eclipse” (also seen as “Chaotic Eclipse”) has published…

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