Cisco IOS XE 17.18 Update Version Cisco IOS XE 17.18.x

Cisco Catalyst 9500 Series Switches, Cisco IOS XE 17.18.x includes new features in 17.18.1 and 17.18.2, with no new features in 17.18.3. The document also highlights security warnings for legacy protocols, upgrade/downgrade steps, ROMMON guidance, and open caveats.

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Product Information

Vendor: Cisco

Product: IOS XE

Product type: Other

Platform: Network Device

Variant: 17.18

Version: Cisco IOS XE 17.18.x

Vendor information published: Aug 7, 2025

Original release notes: View on vendor site

Published on updatealert.io: Jun 5, 2026

Description: Network operating system software for Cisco enterprise routers and switches.