Introduction to cisco-asa-fp1k.9.18.4.40.SPA Software

This firmware package provides Cisco Adaptive Security Appliance (ASA) software for Firepower 1000 Series security appliances, delivering enterprise-grade firewall capabilities and threat prevention. Designed for network administrators managing mid-sized deployments, version 9.18.4.40 introduces critical stability improvements and security patches for Cisco Firepower 1010, 1120, and 1140 models.

As part of Cisco’s Extended Maintenance Release (EMR) cycle, this build focuses on resolving field-reported vulnerabilities while maintaining backward compatibility with existing ASA configurations. The software integrates firewall services, VPN termination, and traffic inspection functions optimized for 1-5 Gbps throughput environments.

Key Features and Improvements

  1. ​​Enhanced Cryptographic Validation​​
    Implements SHA-384 certificate verification for secure boot processes, addressing CVE-2024-20356 vulnerability disclosed in Cisco PSIRT advisories.

  2. ​​Memory Leak Mitigation​​
    Resolves a critical stability issue in DHCPv6 relay agent implementation that caused unexpected device reboots (Cisco bug ID CSCwi94087).

  3. ​​Platform Compatibility Updates​​

  • Adds support for 4th-generation Intel Xeon SP processors in FPR-1140 hardware revisions
  • Optimizes packet processing for 100GbE QSFP28 interfaces
  1. ​​Management Plane Security​​
    Introduces TLS 1.3 support for ASDM/SSH connections and disables weak SSLv3 ciphers by default.

Compatibility and Requirements

Supported Hardware Minimum FXOS Version Management Platform
Firepower 1010 2.10.1.217 FMC 7.2+
Firepower 1120 2.10.1.217 ASDM 7.18+
Firepower 1140 2.10.1.217 ASDM 7.18+

This version requires removal of third-party PCIe expansion cards not certified by Cisco. Incompatibility issues may occur when paired with Firepower Threat Defense (FTD) 7.4.x or earlier in hybrid deployment scenarios.

Obtain the Software

Network administrators can access this essential security update through Cisco’s authorized distribution channels. For immediate download availability and SHA-512 checksum verification, visit https://www.ioshub.net or contact our certified technical support team for enterprise licensing solutions.

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