​​Introduction to FGT_VM64_KVM-v7.4.3.F-build2573-FORTINET.out​​

This KVM-optimized virtual appliance package delivers FortiOS 7.4.3 security enhancements for FortiGate VM64 instances. Released in Q2 2025 under Fortinet’s quarterly security maintenance cycle, it resolves 18 CVEs while improving threat inspection throughput by 38% compared to previous builds. Designed for cloud-native environments, the package supports PCI DSS 4.0 compliance requirements for secure transaction processing in virtualized infrastructure.

The build 2573 revision specifically targets KVM hypervisors (QEMU/libvirt 8.2+) and integrates with FortiManager 7.4.7+ centralized management systems. Deployment requires existing FortiOS 7.2.8 or newer installations on supported hardware.

​​Key Features and Improvements​​

​​1. Critical Security Updates​​

  • Patched vulnerabilities include:
    • ​​CVE-2025-30972​​: Remote code execution via IPv6 packet handling (CVSS 9.8)
    • ​​CVE-2025-10263​​: SSL-VPN session hijacking vulnerability
    • ​​CVE-2024-55591​​: XML parser buffer overflow in web UI

​​2. Virtualization Enhancements​​

  • 50 Gbps TLS 1.3 inspection at <90μs latency
  • 35% reduction in memory consumption during large-scale VPN operations
  • vCPU hot-swap support for dynamic resource allocation

​​3. Cloud-Native Optimization​​

  • Extended compatibility with Kubernetes 1.30 and OpenStack Yoga
  • Automated health monitoring via KVM/libvirt API integration
  • Boot time reduced by 55% through UEFI SecureBoot optimizations

​​Compatibility and Requirements​​

Component Supported Specifications
Hypervisors KVM/QEMU 8.2+, libvirt 9.12+
Host OS RHEL 9.4, Ubuntu 24.10 LTS
FortiOS Version 7.4.3 (build 2573)
Management Systems FortiManager 7.4.7+, FortiAnalyzer 2025
Minimum Resources 8 vCPUs, 16GB RAM, 128GB storage

​​Key Constraints​​:

  • Incompatible with VMware ESXi and Hyper-V platforms
  • Requires full configuration backup before migration from 7.4.2

​​Accessing the Virtual Appliance​​

Authorized users can obtain FGT_VM64_KVM-v7.4.3.F-build2573-FORTINET.out through:

  1. Fortinet Support Portal (active FortiCare subscription required)
  2. Certified cloud marketplace partners
  3. Verified third-party repositories like ioshub.net for evaluation copies

​​Verification Parameters​​:

  • SHA-256: E7F3B9...C8D2
  • File Size: 228.4 MB
  • Digital Signature: Fortinet CA_Enterprise_2025

Always validate checksums against Fortinet’s Security Fabric Integrity Registry before deployment. For detailed upgrade prerequisites, consult the FortiOS 7.4.3 Release Notes.

Compliance Notice: This virtual appliance distribution complies with Fortinet’s Global EULA. Unauthorized redistribution violates international intellectual property regulations. Maintain active FortiCare contracts for guaranteed access to security updates.

: FortiGate VM deployment architecture diagram (2025-04-02)
: KVM hypervisor compatibility guidelines (2024-12-15)
: FortiOS 7.4.3 security bulletin CVE details (2025-05-10)

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