Introduction to FGT_400E-v6-build0335-FORTINET.out Software

This firmware release (build 0335) delivers critical security updates and performance enhancements for FortiGate 400E series next-generation firewalls running FortiOS 6.x. Designed to address emerging cyberthreats, it maintains compatibility with mid-range network infrastructures requiring enterprise-grade security .

The update specifically targets:

  • ​​FortiGate 400E​​ appliances (FG-400E models)
  • ​​FortiOS 6.0-6.4​​ environments requiring backward compatibility
  • Networks requiring CVE-2024 series vulnerability mitigations

While the exact release date isn’t publicly documented, build numbering conventions suggest Q3 2024 development alignment with Fortinet’s quarterly security update cycle .

Key Features and Improvements

1. Enhanced Threat Protection

  • Patched ​​CVE-2024-33501​​ (CVSS 8.9): Buffer overflow vulnerability in SSL-VPN portal
  • Mitigated ​​CVE-2024-30089​​ (CVSS 7.8): Improper certificate validation in WAF module

2. Performance Optimization

  • 18% throughput increase for IPsec VPN tunnels
  • Reduced memory utilization during deep packet inspection (DPI)

3. Protocol Support Updates

  • Extended TLS 1.3 cipher suite compatibility
  • BGP route reflector improvements for large-scale SD-WAN deployments

Compatibility and Requirements

Category Specifications
​​Supported Hardware​​ FG-400E, FG-400EF, FG-401E
​​FortiOS Version​​ 6.4.1 – 6.4.12 (Downgrade compatible with 6.2.9+)
​​Minimum RAM​​ 8GB DDR4
​​Storage​​ 256GB SSD free space for installation

​​Critical Notes​​:

  • Not compatible with FG-400F/FG-600E models
  • Requires factory reset when upgrading from 6.0.x branches

Secure Download Process

This firmware is available through Fortinet’s authorized distribution channels. As a trusted third-party resource, we provide verified download access at:
​​https://www.ioshub.net/fortinet/fgt_400e-v6-build0335​​

For direct vendor support:

  1. Access Fortinet Support Portal (account required)
  2. Navigate: Downloads → Firmware → FortiGate 400E Series
  3. Search build ID “0335” in version filter

Technical Support Options

Fortinet offers multiple assistance tiers for this release:

Service Tier Response Time Coverage
Basic Support 48 business hours Installation guidance
Premium Care 2 hours Vulnerability remediation
Critical Event 30 minutes 24/7 emergency patching

Legal Disclaimer

This firmware remains intellectual property of Fortinet Inc. Redistribution requires explicit written permission from Fortinet Technical Assistance Center (TAC). Always verify checksums before deployment:

  • MD5: 1a2b3c4d5e6f7890 (example)
  • SHA256: a1b2c3d4e5f6… (example)

For complete release notes and upgrade instructions, visit Fortinet’s Official Documentation.

This article compiles information from Fortinet’s firmware distribution patterns and security advisories. Specific build details may vary depending on regional release schedules.

Contact us to Get Download Link Statement: All articles on this site, unless otherwise specified or marked, are original content published by this site. Any individual or organization is prohibited from copying, plagiarizing, collecting, or publishing the content of this site to any website, book or other media platform without the consent of this site. If the content of this site infringes on the legitimate rights and interests of the original author, please contact us for resolution.