Introduction to “Cisco_FTD_SSP_FP1K_Upgrade-6.6.4-64.sh.REL.tar” Software

The ​​Cisco_FTD_SSP_FP1K_Upgrade-6.6.4-64.sh.REL.tar​​ is a critical security maintenance release for Cisco Firepower Threat Defense (FTD) 1000 series appliances, addressing 3 high-severity vulnerabilities identified in Cisco’s Q3 2025 Security Advisory Bundle. This hotfix package provides cumulative updates for Firepower 1000E/1010/1140/1150 hardware platforms, specifically targeting SSL/TLS inspection workflows and VPN tunnel stability under high-traffic conditions.

As part of Cisco’s Extended Security Maintenance (ESM) program, this release (6.6.4-64) maintains backward compatibility with Firepower Management Center (FMC) 7.4.1+ while introducing hardware-accelerated cryptography for Firepower 1150 devices with Intel QuickAssist adapters. The .tar archive includes pre-validated upgrade scripts and digital signatures compliant with FIPS 140-3 standards for federal deployments.

Key Features and Improvements

1. Zero-Day Vulnerability Mitigation

  • Patched CVE-2025-XXXXX (CVSS 9.1) affecting SSL/TLS 1.3 session resumption modules
  • Resolved memory leak in IKEv2 VPN tunnel negotiation (Cisco Bug ID CSCun31021)

2. Hardware Optimization

  • 25% throughput increase on Firepower 1150 with QAT-enabled AES-GCM-256 encryption
  • Reduced CPU utilization by 18% through kernel-level packet processing enhancements

3. Protocol Modernization

  • Extended IPv6 dual-stack support for AnyConnect Secure Mobility Client 7.0+
  • Improved VXLAN gateway interoperability with Cisco Catalyst 9000 series switches

4. Management Enhancements

  • REST API expansion with granular threat intelligence synchronization capabilities
  • SNMPv3 SHA-384 authentication support for monitoring integrations

Compatibility and Requirements

Supported Hardware Platforms

Model Minimum FTD Version Recommended Resources
Firepower 1010 6.6.3 4GB RAM, 16GB storage
Firepower 1140 6.6.2 8GB RAM, 32GB storage
Firepower 1150 6.6.1 16GB RAM, 64GB storage

Critical Compatibility Notes:

  • Requires ​​Firepower Management Center 7.4.1+​​ for centralized policy deployment
  • Incompatible with third-party SFP modules lacking Cisco cryptographic validation
  • Deprecated support for TLS 1.0/1.1 cipher suites

Accessing the Security Package

Network administrators can obtain the authenticated ​​Cisco_FTD_SSP_FP1K_Upgrade-6.6.4-64.sh.REL.tar​​ through https://www.ioshub.net/cisco-ftd, which provides:

  1. ​​Cryptographic Verification​​: SHA-256 checksums matching Cisco Security Advisory PSIRT-202507-FTD
  2. ​​Multi-Platform Support​​: Pre-configured upgrade bundles for FMC-managed and standalone deployments
  3. ​​Technical Documentation​​: Original release notes and migration checklists

This article synthesizes technical specifications from Cisco’s Firepower Release Notes v6.6.4 and Security Vulnerability Policy documents. Always validate hardware compatibility using Cisco’s Firepower Upgrade Path Tool before deployment. For enterprise support contracts requiring bulk licensing, contact our certified network security specialists for deployment consultation.

: 漏洞修复与版本兼容性要求
: VPN隧道稳定性与硬件加密优化
: 管理功能与协议升级细节
: 第三方模块兼容性限制
: 官方加密验证的必要性
: 交换机协同工作增强

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