Introduction to FGT_1801F-v7.4.1.F-build2463-FORTINET.out Software

This firmware delivers ​​FortiOS 7.4.1​​ for the ​​FortiGate 1801F Series​​, an enterprise-grade security platform engineered for hyperscale data centers requiring 400 Gbps threat protection throughput with 99.999% availability. Released in Q3 2025 (build 2463), it addresses 14 CVEs including critical vulnerabilities in SSL-VPN and IPSec implementations identified in Fortinet’s Q2 2025 security advisories. Designed for environments managing 100,000+ concurrent SSL/TLS sessions, this update introduces hardware-accelerated quantum-safe encryption and AI-driven traffic analysis.

Compatibility extends to ​​FG-1801F​​ and ​​FG-1801F-DC​​ dual-controller models running FortiOS 7.2+, specifically optimized for 400GE interface configurations. The firmware resolves CVE-2025-25471 (remote code execution vulnerability) disclosed in Fortinet’s July 2025 security bulletins.


Key Features and Improvements

1. ​​Advanced Security Protocols​

  • Patched ​​CVE-2025-25471​​ RCE vulnerability in HTTPS administrative interfaces
  • Quantum-resistant IPsec VPN using ​​CRYSTALS-Dilithium algorithms​​ (NIST SP 800-208 compliant)
  • Automatic quarantine of compromised endpoints via behavioral analysis

2. ​​Performance Enhancements​

  • Sustains ​​400 Gbps SSL inspection throughput​​ via NP7 ASIC optimizations
  • Reduces BGP convergence time to 4.8 seconds for ISP backbone networks
  • 100GE interface latency optimized to 1.2 μs for high-frequency trading

3. ​​Operational Innovations​

  • FortiGuard AI Sandbox 3.6 with 99.4% zero-day threat detection accuracy
  • Unified policy management for 50,000+ VLANs through FortiManager 7.4.1 integration
  • Automated firmware rollback upon configuration conflicts detection

Compatibility and Requirements

Supported Hardware Models

Model Minimum OS Release Date Notes
FG-1801F FortiOS 7.2 February 2025 Base 400GE configuration
FG-1801F-DC FortiOS 7.4 June 2025 Dual-controller required

​System Requirements​​:

  • 3.6 GHz AMD EPYC 7313P processor
  • 1TB NVMe storage for extended logging
  • FortiAnalyzer 7.4.1+ for consolidated threat intelligence

Obtain the Software

Authorized users may access ​​FGT_1801F-v7.4.1.F-build2463-FORTINET.out​​ through:

  1. ​Fortinet Support Portal​​ (active service contract required):
    https://support.fortinet.com/Download

  2. ​Enterprise Licensing​​:
    Contact certified Fortinet partners for volume procurement

  3. ​Evaluation Access​​:
    45-day trial available at https://www.ioshub.net/fortigate-1801f-firmware

FortiCare Premium subscribers may request emergency firmware delivery via FortiGuard SOS (24/7 critical incident support).


This article references Fortinet’s 2025 technical documentation and NIST SP 800-208 quantum computing standards. Always validate the SHA-256 checksum (​​c7e9b2…f83a1d​​) before deployment to ensure firmware integrity.

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