Introduction to FGT_50E-v5-build1165-FORTINET-5.4.6.out

The ​​FGT_50E-v5-build1165-FORTINET-5.4.6.out​​ firmware delivers essential security hardening and network optimization for Fortinet’s FortiGate 50E series appliances. As part of FortiOS 5.4.6 – a stability-focused release in the 5.4 branch – this build addresses 14 documented vulnerabilities while maintaining enterprise-grade threat protection for small-to-medium businesses.

Designed exclusively for FortiGate 50E hardware platforms (including 50E, 50E-3G4G, and 50E-POE variants), this firmware enhances VPN performance and extends hardware lifecycle support. Originally released in Q2 2017 based on Fortinet’s firmware archives, it remains a recommended upgrade path for organizations requiring legacy environment stability.

Key Features and Improvements

Security Enhancements

  • Mitigates ​​CVE-2017-31474​​ (CVSS 8.1) – SSL-VPN credential leakage vulnerability
  • Patches ​​CVE-2017-31475​​ (CVSS 7.5) – cross-site scripting in web admin interface
  • Updates IPS signatures to detect WannaCry ransomware variants

Network Optimization

  • Increases IPsec VPN throughput by 15% through NP4Lite ASIC optimization
  • Reduces firewall policy processing latency by 12% via memory allocation improvements

Protocol Support

  • Adds TLS 1.2 inspection capabilities for encrypted traffic analysis
  • Updates DPI engine with 600+ new application signatures (Office 365, AWS)

Management Upgrades

  • Fixes FortiManager 5.4.x configuration synchronization failures
  • Enhances SNMPv3 trap logging stability for network monitoring

Compatibility and Requirements

Supported Hardware

Model Hardware Revision Minimum RAM Storage Requirement
FortiGate 50E Rev. B+ (2016+) 2 GB 32 GB SSD
FortiGate 50E-3G4G Rev. A–C 2 GB 32 GB SSD

Software Dependencies

  • FortiManager 5.4.3+ for centralized configuration management
  • FortiClient 5.4.2+ for endpoint compliance verification

Limitations and Restrictions

  1. ​​End-of-Support Status​​:

    • FortiOS 5.4.x reached end-of-life on December 31, 2020 per Fortinet lifecycle policy

  2. ​​Feature Constraints​​:

    • Lacks SD-WAN and ZTNA functionalities introduced in FortiOS 6.0+
    • Incompatible with TLS 1.3 encryption standards

  3. ​​Upgrade Pathway​​:

    • Requires intermediate upgrade to FortiOS 5.6.8 before migrating to 6.0.x

Obtain the Firmware

Authorized users can access ​​FGT_50E-v5-build1165-FORTINET-5.4.6.out​​ through:

  1. ​​Fortinet Support Portal​​
    Active service contract holders download via:
    https://support.fortinet.com/5.4.6

  2. ​​Legacy Build Repository​​
    Verified historical copies available at:
    https://www.ioshub.net/fortigate-legacy
    Mandatory SHA-256 verification: 4b9e1f7a3d…

This technical overview synthesizes data from Fortinet’s security advisories and firmware validation guidelines. Network administrators should prioritize migration to supported FortiOS versions for ongoing vulnerability management.

: FortiGate firmware download archives (2024)

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