Cisco's Network Gatekeeper Had a Perfect 10 Hole in It
Future Technology
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Cybersecurity
Cisco's Network Gatekeeper Had a Perfect 10 Hole in It
Cisco Identity Services Engine is the system a lot of large networks use to decide who gets in and who doesn't. Plug in a laptop, connect to Wi-Fi, join a VPN, and ISE is usually the thing quietly checking your identity before it lets you through. On 16 September 2026, Cisco admitted that gatekeeper had a hole in it big enough to walk a truck through.
Key Takeaways
- Patch Cisco ISE immediately, no workaround exists
- Check whether your ISE admin interface is exposed to the internet
- CISA set a 19 September 2026 deadline for federal agencies
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