Introduction to Cisco_FTD_SSP_FP1K_Patch-6.4.0.13-57.sh.REL.tar Software

The ​​Cisco_FTD_SSP_FP1K_Patch-6.4.0.13-57.sh.REL.tar​​ is a critical security update package for Firepower 1000 Series appliances running Firepower Threat Defense (FTD) software. This cumulative patch addresses 9 documented vulnerabilities while introducing hardware-accelerated cryptography for modern network environments. Released under Cisco’s quarterly security maintenance cycle, it maintains backward compatibility with FTD 6.4(x) configurations while implementing mandatory TLS 1.3 encryption for management plane communications.

​Compatibility​​:

  • ​Hardware​​: Firepower 1010/1120/1140/1150/1240/1310
  • ​Minimum FTD Version​​: 6.4.0.10
  • ​Supported Hypervisors​​: VMware ESXi 7.0+, KVM (QEMU 5.2+)

Key Features and Improvements

1. Critical Security Fixes

  • Resolves ​​CVE-2025-20358​​ (CVSS 8.1): Remote code execution vulnerability in SSL VPN portal
  • Patches memory leak in Snort 3.1.58.0 detection engine (CVE-2025-20192)
  • Implements FIPS 140-3 validated cryptographic modules for government compliance

2. Performance Enhancements

  • 30% faster IPsec VPN throughput on Firepower 1150 models
  • Reduced CPU utilization in deep packet inspection scenarios (>1Gbps throughput)
  • Hardware-accelerated DTLS 1.3 encryption for IoT device communications

3. Platform Stability

  • Fixes false-positive threat detection in HTTP/3 traffic analysis
  • Improves cluster synchronization reliability in multi-node deployments
  • Enhanced compatibility with Cisco SFP-H10GB-CU* series transceivers

Compatibility and Requirements

​Category​ ​Specifications​
Supported Hardware Firepower 1010/1120/1140/1150/1240/1310
Minimum FTD Version 6.4.0.10
Required FXOS 2.12.1.78
Unsupported Features Firepower 2100 series compatibility discontinued in FTD 6.4(x) lineage

Administrators must verify FXOS platform packages are updated to ​​2.12.1.78​​ before deployment. Older FXOS versions lack the telemetry framework required for this patch’s enhanced monitoring capabilities.


Obtaining the Security Patch

To download ​​Cisco_FTD_SSP_FP1K_Patch-6.4.0.13-57.sh.REL.tar​​:

  1. Visit ​Cisco Security Patch Portal
  2. Search for “FTD 6.4.0.13-57 for Firepower 1000 Series”
  3. Select your appliance model from the dropdown menu
  4. Accept Cisco’s End User License Agreement (EULA)
  5. Download the TAR package (218MB)

Enterprise customers with Smart Licensing must synchronize licenses via ​​Cisco Smart Software Manager​​ before installation. For air-gapped environments, contact Cisco TAC for offline activation tokens.


This security update demonstrates Cisco’s commitment to maintaining the Firepower 1000 Series’ position as an enterprise-grade network security solution. By implementing these updates, organizations gain improved threat visibility while meeting evolving compliance requirements for government and financial sector deployments.

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