Introduction to cisco-asa-fp3k.9.18.3.SPA
This maintenance release for Cisco Firepower 3100 Series appliances addresses 12 CVEs while maintaining backward compatibility with FXOS 2.8.1+ platforms. Designed for enterprise networks requiring FIPS 140-3 Level 2 compliance, the 9.18.3 build enhances TLS 1.3 session handling and improves cluster failover performance by 25% compared to previous 9.18.x versions.
The software package supports Firepower 3130/3140/3150 hardware models with integrated threat prevention capabilities, offering simultaneous firewall, VPN, and intrusion prevention services. It implements RFC 8879 certificate validation improvements to reduce false positives in PCI DSS 4.0-compliant environments.
Key Features and Improvements
-
Enhanced Cryptographic Performance
Implements AES-GCM-256 hardware acceleration on Firepower 3150 crypto modules, achieving 38% faster encrypted session establishment. -
Cluster Optimization
- Increases maximum cluster nodes to 16 for multi-chassis deployments
- Reduces HA state synchronization latency to 820ms through optimized BGP propagation
- Security Updates
- Patches XSS vulnerability in web interface (CVE-2025-39165)
- Resolves IKEv2 memory exhaustion issue (CVE-2025-39164)
- Management Enhancements
- REST API bulk policy deployment latency reduced by 30%
- Smart License transport now enforces OCSP stapling by default
- Diagnostic Tools
- Real-time memory monitoring detects 94% of allocation anomalies
- Extended packet capture supports QUIC v2 protocol header filtering
Compatibility and Requirements
| Category | Specifications |
|---|---|
| Supported Hardware | Firepower 3130 Firepower 3140 Firepower 3150 |
| FXOS Platform | 2.8.1.217+ (Minimum 2.7.3 for upgrades) |
| Virtualization | VMware ESXi 8.0 U3+ KVM 4.5.0+ |
| Security Modules | IPS SSP 60 FirePOWER Services 7.6.0+ |
| Management Systems | Cisco Defense Orchestrator 3.1+ Firepower Management Center 7.6.2 |
Upgrade Constraints:
- Requires 20GB free disk space for rollback capability
- Incompatible with AnyConnect 4.10.05104 and earlier VPN clients
- LACP port-channel configurations must be dissolved pre-installation
Verified Software Distribution via IOSHub
For authenticated access to cisco-asa-fp3k.9.18.3.SPA:
- Visit https://www.ioshub.net/firepower-3100-asa
- Complete enterprise verification through ISO 27001-certified portal
- Download cryptographically signed package (SHA-256: 3A9F1…D82E1)
Our platform guarantees:
- RFC 3161 timestamped signature validation
- Automatic CVE cross-referencing with Cisco PSIRT advisories
- 24/7 technical support from CCIE Security-certified engineers
This build incorporates fixes documented in Cisco Security Advisory 2025-ASA-0321. Always verify hashes against Cisco’s official PSIRT portal before deployment.
