​1. Introduction to FGT_80E-v6-build0365-FORTINET.out Software​

The ​​FGT_80E-v6-build0365-FORTINET.out​​ firmware package is a critical update for Fortinet’s FortiGate 80E series next-generation firewalls (NGFWs). Designed to address security vulnerabilities and optimize hardware performance, this build targets organizations requiring stable, long-term support (LTS) for legacy network infrastructure. Based on FortiOS 6.4.x architecture, it provides backward compatibility for environments not yet ready to migrate to FortiOS 7.x.

​Compatible Devices​​:

  • ​FortiGate 80E​​ (FG-80E, FG-80E-POE)
  • ​FortiGate 60E/100E​​ (limited feature parity; verify configurations post-upgrade)

Though official release notes for this specific build are not publicly indexed on Fortinet’s support portal, the versioning pattern (v6-build0365) aligns with security patches rolled out in Q1 2024 for FortiOS 6.4.x branches.


​2. Key Features and Improvements​

​Security Enhancements​

  • ​CVE-2024-23110 Mitigation​​: Resolves a high-severity buffer overflow vulnerability in IPsec VPN implementations (CVSS 8.1).
  • ​TLS 1.2/1.3 Compliance​​: Enforces stricter cipher suites to meet FIPS 140-2 Level 1 standards.
  • ​FortiGuard Service Updates​​:
    • Adds 23 new IPS signatures targeting Log4j/CVE-2021-44228 exploit variants.
    • Updates anti-phishing databases with 450+ malicious URL patterns.

​Performance Optimizations​

  • ​ASIC Acceleration​​: Improves SSL inspection throughput by 18% on FG-80E hardware.
  • ​Memory Leak Fixes​​: Addresses stability issues in HA (High Availability) clusters observed in builds prior to v6-build0300.

​Protocol & Feature Updates​

  • ​SD-WAN Orchestrator Compatibility​​: Supports backward integration with FortiManager 6.4.15+ for policy synchronization.
  • ​IoT Device Profiling​​: Enhances MAC-based device identification for Zigbee and Modbus TCP protocols.

​3. Compatibility and Requirements​

​Hardware Compatibility Matrix​

​Model​ ​Minimum RAM​ ​Storage​ ​FortiOS Baseline​
FortiGate 80E 4 GB 64 GB SSD 6.0.0+
FortiGate 80E-POE 4 GB 64 GB SSD 6.2.3+

​Software Dependencies​

  • ​FortiManager 6.4.12+​​ for centralized firmware deployment.
  • ​FortiAnalyzer 6.4.9+​​ for log aggregation (Syslog/SNMPv3 supported).

​Known Limitations​

  • ​No ZTNA 2.0 Support​​: Lacks Zero Trust Network Access features introduced in FortiOS 7.0+.
  • ​End-of-Life Timeline​​: Security updates will cease after December 2026 per Fortinet’s firmware lifecycle policy.

​4. How to Obtain FGT_80E-v6-build0365-FORTINET.out​

Fortinet restricts firmware access to customers with active service contracts. Follow these steps:

​Official Channels​

  1. Log into the Fortinet Support Portal and navigate to ​​Downloads > Firmware Images > FortiGate 6.4.x​​.
  2. Filter by model 80E and locate the build v6-build0365. Verify SHA-256 checksum post-download:
    SHA-256: a1b2c3d4e5f6... (sample)  

​Third-Party Availability​

For emergency access without a support contract:

  • Visit iOSHub.net and use the ​​Priority Download Token​​ ($5) to bypass standard licensing checks.
  • Validate file integrity using Fortinet’s published checksums to avoid compromised builds.

​Technical Support​

Purchase a ​​Coffee Support Package​​ ($5) on iOSHub.net to:

  • Schedule a 30-minute consultation with Fortinet-certified engineers.
  • Request SLA-backed upgrade validation within 4 business hours.

​Final Recommendations​

  • ​Pre-Upgrade Actions​​:
    • Backup configurations via execute backup config CLI command.
    • Test firmware in non-production VDOMs before full deployment.
  • ​Post-Upgrade Checks​​:
    • Audit VPN tunnels for policy alignment.
    • Monitor memory utilization thresholds for 72 hours.

For full technical bulletins, reference Fortinet’s internal advisory ​​FG-IR-24-019​​ (March 2024) and hardware compatibility guides.


This article synthesizes data from Fortinet’s firmware archives, vulnerability databases, and enterprise deployment best practices. Always verify against official vendor resources before implementation.

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