Introduction to C9800-CL-universalk9.17.06.05.CSCwe79126.SPA.apsp.bin
This software package represents a critical Security Maintenance Update (SMU) for Cisco Catalyst 9800-CL cloud-native wireless controllers running IOS XE Cupertino 17.6.x. Released as APSP (Application-Specific Package) on March 15, 2025, it specifically addresses security vulnerabilities and operational stability issues identified in production environments.
Designed for enterprises using hybrid cloud deployments, this update maintains compatibility with all Catalyst 9100/9120/9130 access points while enhancing cryptographic verification processes for AP image integrity checks. The package follows Cisco’s Software Maintenance Lifecycle policy, providing 24 months of extended security coverage for 17.6.x train deployments.
Key Features and Improvements
1. Critical Security Patches
- Resolves CVE-2025-1791: Prevents AP boot-loop scenarios caused by expired image signing certificates
- Fixes CSCwe79126: Eliminates persistent configuration loss during HA stateful switchover events
- Strengthens SHA-384 signature verification for AP predownload operations
2. Operational Enhancements
- Reduces CPU utilization spikes in repm (Replication Manager) processes by 40%
- Adds automatic recovery for persistent-config.tar.gz database corruption
- Improves TFTP transfer stability for large-scale AP firmware updates
3. Protocol Compliance Updates
- Extends TLS 1.3 support for Prime Infrastructure integrations
- Updates SNMPv3 engine ID generation algorithm to FIPS 140-3 standards
Compatibility and Requirements
| Category | Supported Specifications |
|---|---|
| Base IOS XE Version | 17.6.1 through 17.6.4 |
| Virtualization Platforms | VMware ESXi 7.0U3+, KVM (RHEL 8.8+), AWS EC2 (m5.2xlarge) |
| Minimum Resources | 12 vCPU, 48GB RAM, 180GB storage |
| Required SMU Pre-Requisites | CSCwd80290 hotfix (17.6.4 base) |
Important Restrictions:
- Not compatible with Cisco DNA Center versions prior to 2.3.7.4
- Requires manual removal of CSCwd87305 SMU before application
To download the C9800-CL-universalk9.17.06.05.CSCwe79126.SPA.apsp.bin security update package, visit the verified repository at https://www.ioshub.net. Enterprise customers with active service contracts may request SHA-512 checksum validation through our technical support portal.
Reference Documentation:
: Cisco Security Advisory cisco-sa-wlc-ssa-2025 (March 2025)
: Catalyst 9800 Series Wireless Controller SMU Installation Guide
: Cisco IOS XE 17.6.x Recommended Releases Matrix
