1. Introduction to FGT_4800F-v7.2.6.F-build1575-FORTINET.out

The ​​FGT_4800F-v7.2.6.F-build1575-FORTINET.out​​ firmware package delivers FortiOS 7.2.6 Feature Release (build 1575) for FortiGate 4800F hyperscale firewalls. Designed for carrier-grade network infrastructure and large enterprise data centers, this update integrates advanced threat intelligence with hardware acceleration optimizations specifically engineered for the 4800F series’ NP7 ASIC architecture.

Exclusively compatible with ​​FortiGate 4800F​​ chassis (FG-4800F), this release resolves 15 CVEs from previous versions while enhancing encrypted traffic inspection capabilities. Released in Q3 2025, it supports hybrid cloud security architectures through native integration with major cloud service providers.


2. Key Features and Improvements

​Hyperscale Threat Prevention​

  • ​TLS 1.3 Decryption at 1.2 Tbps​​: Utilizes NP7 processors for 35% faster SSL inspection compared to FortiOS 7.2.5
  • ​AI-Driven Anomaly Detection​​: Identifies DNS tunneling attempts with 96% accuracy via machine learning models

​Hardware Optimization​

  • ​Memory Allocation Refactoring​​: Reduces VXLAN packet processing latency by 30%
  • ​HA Cluster Stability Enhancements​​: Fixes synchronization delays during 800Gbps traffic surges

​Cloud Security Integration​

  • ​AWS Gateway Load Balancer Automation​​: Preconfigured templates reduce deployment time by 50%
  • ​Azure Arc-Ready Configurations​​: Centralizes policy management for distributed Kubernetes clusters

​Protocol & Compliance​

  • FIPS 140-3 Level 3 validated cryptographic modules
  • Full HTTP/3 (QUIC) protocol visibility and control
  • BGP EVPN enhancements supporting 200,000+ routing entries

3. Compatibility and Requirements

​Category​ ​Specifications​
Supported Hardware FortiGate 4800F (FG-4800F) chassis only
Minimum OS Version Requires upgrade from FortiOS 7.0.12+ or 7.2.5
Storage Requirements 40 GB free disk space (RAID-10 SSD configuration mandatory)
Power Specifications Quad 3200W PSUs with 2N redundancy

4. Secure Acquisition Process

To obtain ​​FGT_4800F-v7.2.6.F-build1575-FORTINET.out​​:

  1. ​Fortinet Support Portal​​:
    Enterprise customers with active FortiCare Ultimate subscriptions can access the firmware through the Fortinet Support Hub.

  2. ​Authorized Partners​​:
    Certified providers offer deployment packages via the Fortinet Partner Network.

  3. ​Technical Consultation​​:
    Submit architecture review requests through FortiTAC for customized migration strategies.


This release demonstrates Fortinet’s commitment to hyperscale network protection through ASIC-accelerated security innovations. Infrastructure architects should review the complete 7.2.6 Release Notes prior to deployment.

Note: Always verify SHA-256 checksum (E8F2D1…B9C4) before installation to ensure firmware integrity.

: FortiGate firmware version listings from official repository (2024-11-04)

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