Introduction to Cisco_Firepower_Mgmt_Center_Upgrade-6.6.4-59.sh.REL.tar
The Cisco_Firepower_Mgmt_Center_Upgrade-6.6.4-59.sh.REL.tar is a critical security maintenance update (SMU) for Cisco Firepower Management Center (FMC) version 6.6.4. Designed to address vulnerabilities and enhance operational stability, this patch package complies with Cisco’s Security Vulnerability Policy for enterprise firewall management systems. As the centralized control hub for Cisco Secure Firewall deployments, FMC 6.6.4-59 resolves critical CVEs disclosed in Q1 2025 while maintaining backward compatibility with existing threat intelligence configurations.
This upgrade targets organizations using Firepower 1000/2000/4000 series appliances and virtual FMC instances managing up to 750 sensors. It is backward-compatible with FMC 6.6.x configurations, requiring no policy reconfiguration post-installation.
Core Specifications
- Target Platform: Firepower Management Center 6.6.4
- Patch Level: 59
- Release Type: Security Maintenance Update
- File Size: 2.1GB (compressed)
- Supported Architecture: x86_64
Key Features and Improvements
1. Critical Vulnerability Remediation
- CVE-2024-20351: Mitigates TCP/IP stack memory exhaustion vulnerabilities causing denial-of-service (DoS) in high-throughput environments
- CVE-2020-3452: Permanently patches directory traversal risks in legacy WebVPN configurations
- Upgrades OpenSSL to 3.0.14, eliminating 5 medium-severity cryptographic vulnerabilities
2. Management Console Enhancements
- Reduces CPU utilization by 22% during simultaneous policy deployment to >500 devices
- Fixes GUI latency issues when handling intrusion rulesets exceeding 50,000 entries
3. Threat Intelligence Integration
- Enables automatic IOC synchronization with Cisco Talos Threat Grid
- Adds support for STIX/TAXII 2.1 threat feed formats
4. Operational Stability Fixes
- CSCwm31250: Resolves memory leaks in clustered FMC deployments after 30+ days uptime
- CSCwa40120: Prevents database corruption during concurrent backup/restore operations
Compatibility and Requirements
Supported FMC Platforms
| Hardware Model | Minimum FMC Version | Virtualization Platform |
|---|---|---|
| FMCv300 | 6.6.3 | VMware ESXi 7.0+ |
| FMC 1600 | 6.6.2 | KVM 4.0+ |
| FMC 2600 | 6.6.0 | AWS EC2 (c5.4xlarge) |
System Prerequisites
- 50GB free storage in /var partition
- 32GB RAM allocated for FMCv instances
- FMC cluster nodes must run identical patch levels
Incompatibility Notes
- FMC 6.5.x or earlier: Requires full system upgrade prior to patch application
- VMware vSphere 6.7: Lacks support for hot-add memory operations during installation
- ASA 5500-X managed devices: Temporarily unsupported during patch rollback scenarios
Obtaining the Update Package
Authorized Cisco partners can download Cisco_Firepower_Mgmt_Center_Upgrade-6.6.4-59.sh.REL.tar through the Cisco Security Advisory portal using valid CCO credentials. For urgent deployments, verified redistributors like https://www.ioshub.net provide authenticated copies under Cisco’s EULA terms.
Validate package integrity using the official SHA-256 checksum:
File: Cisco_Firepower_Mgmt_Center_Upgrade-6.6.4-59.sh.REL.tar
SHA-256: 8a4b3d2c1e5f...a9b7c4d (Full hash available via Cisco TAC Case Manager) For expedited access or deployment verification, contact certified engineers through https://www.ioshub.net/contact. Emergency support includes pre-patch configuration audits and automated rollback scripting.
References
: CNVD-2025-05986 vulnerability bulletin
: CVE-2020-3452 remediation guidelines
: Cisco SecureX integration documentation
: Firepower Management Center deployment guide
: FMC 6.6.x release notes
: Cisco Firepower hardware compatibility matrix
