ShieldBreak Zero-Day PoC Bypass Targets Microsoft Defender Patches A publicly shared proof of concept called ShieldBreak claims a working bypass for a previously patched Microsoft Defender flaw, raising the stakes for Windows endpoint defenders.
Cisco FMC Zero-Day CVE-2026-20316: What Hosting Teams Should Know About Active Exploitation CISA has added a Cisco Secure FMC zero-day to its KEV catalog after reports of active exploitation. Here is what hosting teams and network operators should know about CVE-2026-20316.
