Introduction to fxos-k9-manager.4.10.1.266.SPA Software
This critical management platform update delivers Cisco FXOS Manager 4.10(1) for Firepower 4100/9300 Series security appliances, addressing 6 CVSS-rated vulnerabilities identified in Cisco’s Q2 2025 Security Advisory Bundle. The package enhances chassis supervision capabilities, including secure boot validation, hardware resource monitoring, and cluster management functions for ASA/FTD logical devices.
Compatible with Firepower 4125/4140/4150 and 9300 chassis running FXOS 2.12.3+, this release introduces improved SSD health analytics and Docker container security controls. Cisco officially published this maintenance update on April 28, 2025 to resolve stability issues in multi-node cluster deployments.
Key Features and Improvements
1. Security Enhancements
- Patches CVE-2025-14455 (CVSS 7.8): Prevents unauthorized BIOS modifications via SNMPv3
- Implements TPM 2.0-based secure boot validation chain
- Adds FIPS 140-3 Level 2 compliance for cryptographic operations
2. Management Optimization
- Reduces service processor (SP) reboot time by 28% during HA failovers
- Enhances NVMe health monitoring with predictive failure alerts for Samsung PM9A3 drives
- Improves REST API response times by 40% for chassis inventory exports
3. Platform Stability
- Fixes memory leaks in Docker container isolation processes
- Resolves false-positive fan speed alerts in 4140 copper models
- Optimizes VXLAN throughput by 15% on 9300 chassis
Compatibility and Requirements
| Supported Hardware | Minimum FXOS | Management Platform | Storage Free Space |
|---|---|---|---|
| Firepower 4125 | 2.12(0.115) | FMC v7.4.1+ | 85GB |
| Firepower 4140 | 2.12(0.122) | FDM v7.3.0+ | 125GB |
| Firepower 9300 | 2.12(0.130) | Cisco Defense Orchestrator | 160GB |
Critical Compatibility Notes:
- Incompatible with ASA Software versions prior to 9.18(4.12)
- Requires OpenSSL 3.0.14+ for FMC connectivity
- Not supported on Firepower 2100/3100 hardware
Obtaining the Software Package
Network administrators can acquire fxos-k9-manager.4.10.1.266.SPA through:
- Cisco Software Central (valid service contract required)
- Verified third-party repositories like IOSHub
- Emergency TAC download portal for critical vulnerabilities
Validate file integrity using SHA-512 checksum:
c3d82a91...f4e6b209
For upgrade planning guidance, reference Cisco Firepower 4100 Series Maintenance Guide (Document ID: 221036-004 Rev. F).
Quality Assurance Validation
This release completed 1,950+ regression tests including:
- 72-hour continuous cluster failover testing
- AES-256-GCM cryptographic validation
- Docker container escape prevention checks
Cisco PSIRT confirms remediation of all CVSS 5.0+ vulnerabilities through third-party audits.
This technical overview synthesizes information from Cisco Security Advisory cisco-sa-fxos-tamper-XkJhQ9Lv and Firepower 4100 Series Release Notes 4.10.1. Always consult official documentation before deployment.
