Introduction to cisco-asa-fp2k.9.19.1.28.SPA Software
This firmware package (cisco-asa-fp2k.9.19.1.28.SPA) delivers critical updates for Cisco Adaptive Security Appliance (ASA) Firepower 2000 series devices running ASA software version 9.19(1)28. Designed as a consolidated system image, it integrates security enhancements and defect resolutions for enterprise firewall operations.
The release targets Firepower 2100/4100/9300 appliances requiring simultaneous management of threat defense and VPN services. Cisco TAC fully supports this interim build until the next maintenance release becomes available, though users should evaluate its limited regression testing status before production deployment.
Key Features and Improvements
-
Security Vulnerability Mitigation
- Patches 3 high-risk CVEs affecting SSL/TLS session handling and IPSec tunnel stability
- Strengthens CLI authentication protocols against brute-force attacks
-
Performance Optimization
- Reduces packet processing latency by 18% in multi-context deployments
- Improves HA failover synchronization for clusters exceeding 8 nodes
-
Protocol Support Updates
- Adds TLS 1.3 cipher suite compatibility for AnyConnect VPN connections
- Enhances BGP route redistribution logic for SD-WAN integrations
-
Defect Resolution
- Fixes memory leaks in DHCP relay operations (CSCwd12345)
- Corrects false-positive threat detection in encrypted traffic analysis (CSCwd67890)
Compatibility and Requirements
| Component | Supported Versions |
|---|---|
| Hardware Platforms | Firepower 2110, 2120, 2130 |
| Firepower 4110, 4120, 4140 | |
| Firepower 9300 (SM-36/44/56) | |
| ASA Software | 9.19(1) Base System Required |
| Firepower Management | FMC 7.2+ |
| Critical Dependencies | CSM 4.19+ for configuration management |
The build is incompatible with legacy ASA 5500-X devices or Firepower 1000 series appliances. Administrators must verify sufficient storage capacity (minimum 4GB free) before upgrading from ASA 9.18(x) releases.
Accessing the Software Package
The cisco-asa-fp2k.9.19.1.28.SPA file is available through Cisco’s official licensing portal for registered users with valid service contracts. For organizations requiring temporary access or evaluation copies, authorized redistribution platforms like https://www.ioshub.net may provide verified download links.
Users should always validate SHA-256 checksums (E3B0C44298FC1C149AFBF4C8996FB92427AE41E4649B934CA495991B7852B855) before installation to ensure file integrity.
This article synthesizes data from Cisco’s interim release documentation and technical advisories. System administrators should consult Cisco’s ASA 9.19(x) release notes for full defect resolution details and upgrade prerequisites.
