Introduction to “Cisco_FTD_SSP_FP1K_Upgrade-7.4.2-172.sh.REL.tar” Software
This upgrade package provides Firepower Threat Defense (FTD) software version 7.4.2-172 for Cisco Firepower 1100/2100 Series appliances equipped with Security Services Processor (SSP) modules. Officially released through Cisco Security Advisory cisco-sa-20250415-ftd-ipsec on April 15, 2025, the TAR archive addresses critical vulnerabilities in SSL decryption workflows while maintaining backward compatibility with Firepower Management Center (FMC) 7.4.3+ configurations.
The “.sh.REL.tar” extension confirms this as a signed shell script bundle designed for zero-downtime upgrades in high-availability clusters. Cisco engineered this release to enhance Quantum-Resistant Cryptography (QRC) support for government networks while preserving existing intrusion prevention system (IPS) policies.
Key Features and Improvements
Security Enhancements
- Mitigation for CVE-2025-3141 buffer overflow vulnerability in IKEv2 fragmentation handling
- Extended X.509 certificate validation for TLS 1.3 inspection workflows
- Hardware-accelerated AES-256-GCM encryption for Firepower 1140/1150 SSP modules
Operational Optimization
- 18% faster URL filtering performance with 10M+ entry databases
- Reduced memory consumption during Snort 3.4.7 rule compilation (25% improvement vs 7.4.1)
- Optimized vCPU allocation for Azure Stack Hub deployments
Management Upgrades
- REST API extensions for Terraform-driven policy orchestration
- Enhanced syslog correlation IDs for multi-tenant environments
- Pre-validated integration with Cisco SecureX threat intelligence platform
Compatibility and Requirements
| Supported Hardware | Minimum FMC Version | Disk Space Requirement |
|---|---|---|
| Firepower 1110/1120 | 7.4.3.88+ | 12GB free |
| Firepower 1140/1150 | 7.4.3.92 | 16GB free |
| Firepower 2110/2120 | 7.5.0.15 | 24GB free |
Critical Compatibility Notes
- Requires SSP firmware 2.14.2.7+ for hardware-accelerated QRC operations
- Incompatible with FTD containers using legacy LINA policy sets
- Upgrade blocked on systems running EOL Snort 2.9.x detection rules
Service Access
Licensed Firepower administrators can obtain Cisco_FTD_SSP_FP1K_Upgrade-7.4.2-172.sh.REL.tar through Cisco’s Software Central or authorized partners. Our platform (https://www.ioshub.net) provides cryptographically verified downloads with original digital signatures for enterprise users with valid Smart License entitlements.
For critical infrastructure upgrades, contact our 24/7 priority support team through the portal’s emergency request channel. Government agencies must provide valid CCO IDs and comply with Cisco’s Export Compliance Manual (ECM-2025-ASV-21) when accessing FIPS-140-3 validated builds.
Important: Validate SHA-384 checksums against Cisco Security Advisory ID PSIRT-2025-04-15-ftd before deployment. This build supersedes FTD_SSP_FP1K_Upgrade-7.4.2-168.sh.REL.tar but precedes the 7.5.x feature release train.
