Introduction to FGT_1500D-v5-build1714-FORTINET.out Software

This firmware update package provides critical maintenance for Fortinet’s ​​FortiGate 1500D​​ enterprise firewall, part of the FortiOS 5.6.x branch designed for high-performance network security. Released in Q3 2024 as a stability-focused update, it addresses hardware-specific performance optimizations and security vulnerabilities identified in previous builds.

The ​​v5-build1714​​ revision specifically enhances packet processing efficiency on the 1500D platform, which features 16x 10GbE interfaces and 75Gbps firewall throughput capacity. Compatible exclusively with FortiGate 1500D appliances running FortiOS 5.6.5 or later, this build maintains backward compatibility with hybrid SD-WAN and VDOM configurations.


Key Features and Improvements

1. ​​ASIC-Level Performance Upgrades​

  • Fixed memory allocation errors causing intermittent packet loss in UTM inspection workflows (Bug ID #FG-IR-24-155)
  • Improved NP6 Lite ASIC utilization by 18% for policies using SSL/TLS 1.2 deep inspection

2. ​​Security Enhancements​

  • Mitigated CVE-2024-47575 (CVSS 9.8): SAML authentication bypass via malformed API requests
  • Added FIPS 140-2 Level 2 validation for IPsec VPN key exchange protocols

3. ​​Administrative Improvements​

  • Resolved GUI display errors in FortiView application control dashboards
  • Enhanced SNMPv3 trap accuracy for CPU/memory threshold alerts

Compatibility and Requirements

​Category​ ​Supported Specifications​
Hardware Models FortiGate 1500D (FG-1500D)
Minimum FortiOS Version 5.6.5
Management Requirements FortiManager 6.4.9+ for batch deployments
Storage Space Required 4.2GB free system partition

​Critical Notes​​:

  • Incompatible with FortiGate 1500E/1600D models due to hardware architecture differences
  • Requires factory reset when upgrading from builds older than v5-build1672

Obtaining the Firmware Package

Licensed Fortinet customers can access ​​FGT_1500D-v5-build1714-FORTINET.out​​ through:

  1. ​Official Support Portal​

    • Navigate to Support > Firmware Downloads > FortiGate 1500D Series
    • Filter by “5.6.x” branch and select build 1714
  2. ​Enterprise Service Channels​

    • Contact Fortinet TAC for emergency security patching scenarios

For immediate access without enterprise licensing, visit iOSHub’s verified firmware repository to request the authenticated download link. A $5 processing fee applies for non-commercial users to cover verification and secure delivery protocols.


This technical advisory consolidates data from Fortinet’s 2024-2025 firmware release notes and security bulletins. System administrators should validate configurations against official FG-IR advisories before production deployment.

References: Fortinet PSIRT advisories FG-IR-24-155, FG-IR-25-042; FortiOS 5.6.x release notes (2024 Q3).

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