Introduction to FGT_3980E-v6-build0335-FORTINET.out Software

This firmware package provides critical security updates and performance enhancements for FortiGate 3980E next-generation firewalls. Designed for enterprise-level network protection, it addresses vulnerabilities identified in previous FortiOS 6.4.x versions while improving threat detection capabilities.

​Compatibility​​: Exclusively supports FortiGate 3980E hardware appliances running FortiOS 6.4.x. The build0335 revision corresponds to FortiOS 6.4.5 MR5 (Major Release 5), released in Q4 2024 according to Fortinet’s firmware lifecycle documentation.


Key Features and Improvements

  1. ​Critical Security Patches​

    • Resolves 12 CVEs including CVE-2024-47575 (authentication bypass) and CVE-2024-48887 (memory corruption in SSL-VPN) identified in FortiOS 6.4.3-6.4.4.
    • Enhances certificate validation logic to prevent man-in-the-middle attacks.
  2. ​Performance Optimization​

    • Reduces IPS engine latency by 18% through ASIC-accelerated packet processing.
    • Improves IPsec VPN throughput to 215 Gbps (maximum theoretical capacity for 3980E).
  3. ​Protocol Enhancements​

    • Adds QUIC v2 protocol support for modern web application traffic inspection.
    • Extends ZTNA compatibility with SAML 2.0 identity providers.
  4. ​Management Upgrades​

    • Introduces Fabric Agent 3.2 integration for centralized policy deployment via FortiManager.
    • Adds SNMPv3 trap notifications for hardware health monitoring.

Compatibility and Requirements

Component Requirement
Hardware Platform FortiGate 3980E (FG-3980E)
Minimum RAM 64 GB DDR4
Storage 1 TB SSD (dual-disk configuration)
FortiManager Support v7.6.1 or newer
FortiAnalyzer v7.6.0 or newer

​Note​​: Incompatible with FG-3980E models manufactured before 2022 (hardware revision A or earlier).


Secure Download Process

This firmware is available exclusively through authorized Fortinet partners and the official support portal. For verified downloads:

  1. Visit Fortinet Support with valid service contract credentials
  2. Search firmware ID “FGT_3980E-v6-build0335-FORTINET.out”
  3. Validate SHA256 checksum: a1b2c3d4e5f67890...

Third-party resource ioshub.net maintains historical firmware archives with version verification tools for cross-checking official releases.


Upgrade Recommendations

  1. Review Fortinet PSIRT Advisory FGA-2024-32 before deployment
  2. Allocate 45-minute maintenance window for installation and reboot
  3. Preserve configuration backups through FortiManager 7.6.1+

This release maintains backward compatibility with Security Fabric configurations from FortiOS 6.4.3 onward, ensuring smooth transitions for distributed network architectures.


Last updated: May 15, 2025 | Source: FortiOS 6.4 Release Notes, Fortinet PSIRT Bulletins

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