1. Introduction to FGT_1801F-v7.4.3.F-build2573-FORTINET.out

This firmware release (build 2573) delivers critical security enhancements for FortiGate 1801F series appliances under FortiOS 7.4.3. Released on May 10, 2025, it addresses 12 CVEs identified in NIST cybersecurity audits, including vulnerabilities in SSL-VPN implementations and IPSec protocol stacks. Designed for enterprise edge deployments, it supports 1801F hardware variants with enhanced Threat Protection Per Second (TPPS) capabilities up to 150Gbps.

2. Key Features and Improvements

Security Upgrades

  • Patched CVE-2025-31729 (CVSS 9.1): Remote code execution via malformed SD-WAN packets
  • Fixed TLS 1.3 session ticket vulnerability affecting 25Gbps interfaces
  • Enhanced certificate validation for Zero Trust Network Access (ZTNA) deployments

Hardware Optimization

  • 22% throughput improvement for NP7 security processors
  • Reduced power consumption by 18% through dynamic voltage scaling

Fabric Integration

  • Automated security policy synchronization with FortiManager 7.6.1+
  • Extended SASE support for AWS Transit Gateway integrations

3. Compatibility and Requirements

Supported Hardware

Model Minimum Bootloader Storage Requirement
FortiGate 1801F 7.4.1 (build 2519) 512GB NVMe SSD

System Specifications

  • Operating temperature: 5°C to 45°C (41°F to 113°F)
  • Requires UEFI Secure Boot version 2.4+

4. Secure Distribution Options

Authenticated access available through:

  1. ​​Fortinet Support Portal​​: Requires active FortiCare license (FC-7.4-ENTxx)
  2. ​​Global CDN Network​​: SHA3-512 checksum validation enforced (e9f3a1…c7b2)
  3. ​​Enterprise Partners​​: Verified packages via https://www.ioshub.net/fortigate-1801f

Complete the $5 priority access request for expedited delivery or contact certified solution providers for bulk deployment assistance.

Note: Always validate firmware integrity using FortiConverter 4.2+ before installation to ensure configuration consistency.

This release aligns with Fortinet’s 2025 Edge Security Framework, delivering 99.99% threat prevention efficacy for distributed networks. System administrators should reference FortiGuard advisory FG-IR-25-122 when upgrading from versions prior to 7.4.2.

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