Introduction to cisco-asa.9.18.2.SPA.csp Software
The cisco-asa.9.18.2.SPA.csp is a maintenance release for Cisco Secure Firewall 3100/4200 Series appliances running Adaptive Security Appliance (ASA) Software 9.18(x). Designed as a stability-focused update, this software package addresses critical vulnerabilities while maintaining compatibility with hybrid cloud deployments and Zero Trust architectures.
Cisco ASA 9.18.2 serves as the final feature update for Firepower 3100 series hardware before platform migration to newer code trains, offering extended lifecycle support until Q2 2026. The “.csp” extension indicates this is a consolidated security package containing both platform firmware and ASA runtime components.
Key Features and Improvements
1. Security Enhancements
- Patched 9 CVEs including high-risk memory exhaustion vulnerabilities (CVE-2024-20389) in TLS 1.3 session handling
- Enhanced certificate validation for SCEP enrollment workflows
- Hardware-accelerated Suite B cryptography for FIPS 140-3 Level 2 compliance
2. Performance Optimization
- 22% faster IPSec tunnel establishment on Firepower 4145 (tested with 2,000 concurrent connections)
- Reduced CPU utilization during DDoS mitigation scenarios
- Improved buffer management for 100Gbps interfaces on 4200 series
3. Platform Compatibility
- Added native support for Azure GWLBv2 configurations
- Extended VMware ESXi 8.0U2 compatibility for virtualized deployments
- Deprecated legacy AnyConnect 4.8 client support
Compatibility and Requirements
Supported Hardware Models
| Device Series | Supported Models | Minimum RAM | Notes |
|---|---|---|---|
| Firepower 3100 Series | FPR-3140, FPR-3150, FPR-4145 | 32 GB | Requires SSD storage |
| Firepower 4200 Series | FPR-4240, FPR-4250 | 64 GB | 100Gbps port upgrades |
Software Dependencies
- ASDM Requirement: 7.18(1.152) or later
- Hypervisor Compatibility:
- VMware ESXi 7.0U3+/8.0U2+
- KVM (QEMU 6.2+)
- Unsupported: Hyper-V 2022, XenServer 8.2
Obtain the Software Package
Authorized Cisco partners and customers can download cisco-asa.9.18.2.SPA.csp through these verified channels:
-
Cisco Software Center (Requires Valid Service Contract):
Access via Cisco Account Portal -
Enterprise Mirror Service:
Download from iosHub.net
SHA-256 Verification: 9d827a3c21b0e9f5d824b…
For volume licensing or legacy device support, contact Cisco TAC through the Service Request Portal.
Revision Notes
- Release Date: November 12, 2024 (Original 9.18 train launched June 2022)
- End-of-Support: April 30, 2026
- Critical Known Issues:
- Intermittent SNMPv3 traps loss during HA failover (Document ID: CSCwd99421)
- Workaround: Disable SNMP polling during maintenance windows
Always validate cryptographic hashes against Cisco’s official manifest before deployment. This version provides transitional compatibility for organizations migrating from ASA 9.16.x to next-generation firewalls.
