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Deep & Emerging Tech·September 17, 2026·1 min read

Cisco hit by max severity zero-day exploit targeting Identity Services Engine, so it's time to patch up

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A max-severity zero-day in Cisco’s Identity Services Engine means your access-control layer is now an active target, not just plumbing. Treat this as a live-fire drill: patch, then review how quickly you can rotate and audit identity infrastructure when—not if—it’s hit again.