CiscoSoftware

Introduction to C9800-L-universalk9_wlc.V1712_4_ESW13.SPA.bin This specialized firmware package provides critical security updates for Cisco Catalyst 9800-L Wireless Controllers operating in Embedded Wireless Controller (EWC) configurations. Released in Q2 2025, it addresses certificate validation vulnerabilities and AP image integrity failures identified in...

Introduction to C9800-L-universalk9_wlc.17.12.04.CSCwn26561.SPA..bin Software This software release (IOS XE Amsterdam 17.12.04) delivers critical security patches and performance optimizations for Cisco Catalyst 9800-L series wireless controllers. Officially released in Q4 2024, it addresses 14 CVEs rated medium-to-high severity while introducing enhanced...

Introduction to C9800-L-universalk9_wlc.17.17.01.SPA.bin The C9800-L-universalk9_wlc.17.17.01.SPA.bin firmware delivers critical updates for Cisco Catalyst 9800-L Series Wireless Controllers operating in enterprise environments. As part of the IOS XE Amsterdam 17.17.x release train, this version (17.17.01) focuses on security hardening and protocol optimizations...

Introduction to “C9800-L-universalk9_wlc.17.12.04.CSCwi78109.SPA.bin” Software The C9800-L-universalk9_wlc.17.12.04.CSCwi78109.SPA.bin software package provides critical maintenance updates for Cisco Catalyst 9800-L Wireless Controllers running IOS XE 17.12.04. This release primarily addresses security vulnerabilities in CAPWAP session handling while enhancing interoperability with Wi-Fi 7-ready access points...

Introduction to C9800-L-universalk9_wlc.17.12.04.CSCwj93876.SPA.bin This Cisco IOS XE 17.12.04 software update delivers critical security patches and wireless protocol enhancements for Catalyst 9800-L series controllers, specifically addressing vulnerabilities documented in Cisco Security Advisory CSCwj93876. Released in Q2 2025 as an APSP (Application...

Introduction to C9800-L-universalk9_wlc.17.09.04a.CSCwh93727.SPA.apsp.bin This Application-Specific Software Patch (APSP) addresses critical vulnerabilities in Cisco Catalyst 9800-L Wireless Controllers running IOS XE Amsterdam 17.09.x. Released in Q4 2024, it resolves certificate validation failures and memory corruption risks identified in wireless access point...

Introduction to C9800-L-universalk9_wlc.17.16.01.SPA.bin Software This firmware release (IOS XE Amsterdam 17.16.01) delivers critical security patches and functional enhancements for Cisco Catalyst 9800-L series wireless controllers. Officially released in Q2 2025, it addresses 18 CVEs rated medium-to-high severity while introducing extended...

Introduction to “C9800-L-universalk9_wlc.17.15.02b.SPA.bin” Software The C9800-L-universalk9_wlc.17.15.02b.SPA.bin firmware delivers Cisco IOS XE 17.15.02b enhancements for the Catalyst 9800-L Wireless Controller, targeting enterprise-grade Wi-Fi 6E/7 network optimization. This maintenance release within the 17.15.x train focuses on AP interoperability improvements, security hardening, and...

Introduction to C9800-L-universalk9_wlc.17.12.04.SPA.bin This Cisco IOS XE 17.12.04 software package delivers critical stability enhancements for Catalyst 9800-L wireless controllers, specifically designed for large-scale enterprise deployments requiring uninterrupted high availability (HA). As part of Cisco’s 17.12.x Long-Term Support (LTS) train, this...

Introduction to C9800-L-universalk9_wlc.17.12.05.SPA.bin This software package provides critical updates for Cisco Catalyst 9800-L Wireless Controllers running IOS XE Amsterdam 17.12.x. Released in Q1 2025, it addresses stability improvements and security vulnerabilities identified in previous 17.12.x versions while maintaining compatibility with...