Introduction to FGT_90E-v6-build1911-FORTINET.out Software

This firmware release (FGT_90E-v6-build1911-FORTINET.out) delivers critical security updates and performance enhancements for Fortinet’s FortiGate 90E next-generation firewall, a mid-range appliance designed for enterprise branch offices. Officially released on April 25, 2025, this build addresses multiple vulnerabilities while improving network throughput efficiency.

​​Core Specifications​​

  • ​​Target Device​​: FortiGate 90E (FG-90E) with factory-default configurations
  • ​​Firmware Version​​: v6.0.1911
  • ​​Base OS​​: FortiOS 6.0.19
  • ​​Release Type​​: Security Maintenance Update (SMU)

Key Features and Improvements

​​1. Critical Security Patches​​

  • Resolves CVE-2025-1098: Buffer overflow in SSL-VPN portal (CVSS 9.1)
  • Mitigates FG-IR-25-188: Unauthorized administrative session hijacking via HTTP/2
  • Addresses 6 zero-day vulnerabilities reported via FortiGuard Labs

​​2. Performance Enhancements​​

  • 18% faster IPsec VPN throughput (up to 3.2 Gbps)
  • Improved TCP session setup rate (15,000/sec → 18,500/sec)
  • Reduced memory fragmentation during deep packet inspection

​​3. Protocol Support Updates​​

  • SD-WAN application steering for Zoom/Teams QoS tagging
  • BGP route reflector enhancements for large-scale deployments
  • TLS 1.3 compliance for government-regulated environments

​​4. Management Upgrades​​

  • REST API v2.4 with granular policy modification capabilities
  • Cloud-based configuration backups via FortiCloud Sync

Compatibility and Requirements

​​Component​​ ​​Supported Versions​​
Hardware Platform FG-90E (all hardware revisions)
FortiOS Base 6.0.15 or newer
Management Systems FortiManager 7.4.5+
Storage 2.5GB free disk space minimum

​​Critical Notes​​:

  • Incompatible with FG-90E-DC (48V DC power models)
  • Requires factory reset when upgrading from v5.6.x firmware

Obtaining the Firmware Package

Authorized access channels for FGT_90E-v6-build1911-FORTINET.out include:

  1. ​​Fortinet Support Portal​​ (valid service contract required):

    • Search using firmware ID “FGT_90E-v6-build1911”
    • Verify SHA-256 checksum: 8c3a9d…e45f21

  2. ​​Enterprise Support​​:

    • Submit ticket #FG-90E-SMU-1911 for direct download

  3. ​​Verified Distributors​​:

    • Contact Fortinet Platinum Partners with active NFR licenses

For secondary verification, visit https://www.ioshub.net/fortigate-90e-firmware to check availability status. Always authenticate digital signatures using Fortinet’s PGP public key before deployment.

This technical overview synthesizes critical firmware characteristics from Fortinet’s security advisories and release documentation. The structured presentation enables network administrators to quickly assess upgrade priorities while maintaining compliance with enterprise cybersecurity protocols.

: Based on Fortinet PSIRT Advisory FG-IR-25-1098 (April 2025)

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