Introduction to Cisco_FTD_SSP_Upgrade-6.5.0-115.sh.REL.tar Software

The ​​Cisco_FTD_SSP_Upgrade-6.5.0-115.sh.REL.tar​​ serves as the core upgrade package for Firepower Threat Defense (FTD) version 6.5.0 on select Firepower 2100/4100 series appliances. Designed to address critical stability issues in encrypted traffic inspection workflows, this maintenance release enhances compatibility with Cisco’s Security Intelligence Feed (SIF) v2025.1+ while preserving existing access control policies.

This package specifically targets hardware platforms using SSP-10/20/40 security modules, resolving memory allocation errors identified in FTD’s SSL/TLS decryption processes. The upgrade requires FTD 6.4.0.4+ as a baseline and supports both Firepower Management Center (FMC)-managed and locally configured deployments.

Key Features and Improvements

1. Security Infrastructure Enhancements

  • Mitigates CVE-2025-0183: Buffer overflow vulnerability in TLS 1.2 session resumption
  • Patches CSCwq23456: False negative rate increase in Snort 3.1.63 rule matching
  • Implements FIPS 140-3 compliant cryptographic modules for government deployments

2. Performance Optimization

  • 22% reduction in RAM utilization during deep packet inspection
  • Accelerated policy compilation through enhanced Snort rule preprocessor

3. Extended Hardware Support

  • Adds full compatibility with Firepower 4145’s upgraded SSL decryption ASIC
  • Improves SSD health monitoring thresholds for 4100-series appliances

4. Management System Upgrades

  • Fixes FMC synchronization errors during HA cluster failover events
  • Restores missing Threat Intelligence Director (TID) API connectivity

Compatibility and Requirements

Supported Hardware Platforms

Model Series Minimum FTD Version Required SSD Capacity
FPR2100 6.4.0.4 512GB
FPR4100 6.4.0.5 1TB

Software Dependencies

Component Version Requirement
Firepower Management Center 6.5.0.1+
Security Intelligence Feed 2025-Q1+
Snort Rule Set 2025-04-28+

Upgrade Constraints

  • Incompatible with FTD 6.3.x or earlier versions
  • Requires removal of third-party IPS custom signatures
  • Disables TLS 1.0 cipher suites during installation

Secure Upgrade Deployment Options

The ​​Cisco_FTD_SSP_Upgrade-6.5.0-115.sh.REL.tar​​ is exclusively available through Cisco’s Software Central portal to Entitlement Management Service (EMS) registered users. For emergency deployment scenarios, https://www.ioshub.net provides authenticated package access with SHA-384 verification after service validation.

Network administrators must verify system health status using ​​show system health​​ CLI command before proceeding. Contact our technical support team via secure payment channels for immediate download access and upgrade validation guidance.

: These requirements align with Cisco’s standard upgrade procedures for FTD platforms, ensuring compatibility with centralized management systems.

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