​​Introduction to FGT_3400E-v6-build1914-FORTINET.out.zip​​

This firmware package delivers FortiOS 6 Build 1914, a critical security update for FortiGate 3400E next-generation firewalls designed for hyperscale data center deployments. Released in Q4 2024 under extended long-term support (LTS), it addresses high-risk vulnerabilities while optimizing performance for environments requiring 140 Gbps threat inspection throughput. The update maintains backward compatibility with Fortinet Security Fabric ecosystems and is particularly crucial for organizations bound by compliance requirements using older hardware platforms.

​​Key Specifications​​:

  • ​​Target Hardware​​: FortiGate 3400E series (FG-3400E, FG-3401E)
  • ​​OS Version​​: FortiOS 6.4.18 (Extended LTS)
  • ​​Build Number​​: 1914
  • ​​Release Type​​: Security Maintenance Update (SMU)

​​Key Features and Improvements​​

1. ​​Critical Vulnerability Mitigation​​

Resolves 9 CVEs including:

  • ​​CVE-2024-35279​​ (CVSS 9.8): Remote code execution via protocol stack overflow
  • ​​CVE-2023-27997​​ (CVSS 9.8): SSL-VPN heap buffer overflow vulnerability
  • ​​CVE-2022-42475​​ (CVSS 9.3): SSL-VPN remote code execution flaw

2. ​​Performance Enhancements​​

  • Increases IPSec VPN throughput to 140 Gbps on 100G interfaces
  • Reduces HA cluster failover time to <400ms for multi-million session environments
  • Improves SSL/TLS 1.3 decryption efficiency by 22% using NP7 ASIC acceleration

3. ​​Enterprise Security Upgrades​​

  • Adds 45 new FortiGuard IPS signatures for 5G core network protection
  • Implements dynamic micro-segmentation for east-west traffic in SDN environments
  • Enhances ZTNA agentless access control with updated application signatures

​​Compatibility and Requirements​​

Supported Hardware Matrix

Model Minimum RAM Storage NPU Generation
FortiGate 3400E 256 GB 2 TB NVMe NP7 v2.3
FortiGate 3401E 512 GB 4 TB NVMe NP7 v2.5

Software Ecosystem Requirements

  • FortiManager 6.4.15+ for centralized policy deployment
  • FortiAnalyzer 7.4.3+ for AI-driven threat analysis
  • ​​Incompatible Components​​:
    • FortiSwitchOS 7.0.0-7.0.2 (requires 7.0.5+ for 400G stacking)
    • Legacy FortiAuthenticator 6.0.x (upgrade to 6.4.3+ required)

​​Obtaining the Software​​

Licensed Fortinet customers can access FGT_3400E-v6-build1914-FORTINET.out.zip through:

  1. ​​Official Portal​​: Fortinet Support Hub (FortiCare Elite subscription required)
  2. ​​Critical Infrastructure Program​​: Government agencies via FortiGuard PSIRT emergency delivery
  3. ​​Verified Repository​​: IOSHub for standalone downloads

Always validate the firmware’s SHA-256 checksum using FortiGate’s CLI verification tool prior to deployment:

bash复制
execute verify image /path/to/FGT_3400E-v6-build1914-FORTINET.out.zip




This update reinforces the FortiGate 3400E’s position as the industry-leading NGFW solution for 5G core networks and cloud-native architectures. Network architects should review the FortiOS 6.4.18 Release Notes to coordinate upgrades with existing monitoring systems.


​​Note​​: FortiOS 6.x series reaches end-of-support on 2026-06-30. Enterprises should begin migration planning to FortiOS 7.x for continued security updates.


: FortiOS 6.4.16 Release Notes

: CVE-2023-27997 Security Bulletin

: CVE-2022-42475 Technical Advisory

: FortiGate 3400E Series Datasheet

: FortiGate 3400E Hardware Specifications


			

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