Introduction to FGT_VM64_KVM-v7.4.3.F-build2573-FORTINET.out.kvm.zip
This software package delivers FortiOS 7.4.3.F for FortiGate-VM KVM Edition, designed for enterprise-grade virtualized environments requiring hypervisor-native security enforcement. Released under Fortinet’s Q2 2025 security advisory cycle, build2573 introduces ARM64 architecture optimizations while resolving 12 critical vulnerabilities identified in network stack hardening initiatives.
Compatible with KVM hypervisors running on x86_64/ARM64 servers, this release extends lifecycle support through Q4 2028. It supports seamless migration from physical FortiGate 100F/200F appliances and integrates with OpenStack/Kubernetes orchestration platforms.
Key Features and Improvements
1. Virtualization-Optimized Security
- NP7 Virtual ASIC Emulation: Achieves 40 Gbps TLS 1.3 inspection throughput through hardware-assisted cryptographic offloading
- Zero-Day Threat Prevention: FortiGuard AI service updates every 60 seconds with 2025Q2 threat intelligence datasets
2. Critical Vulnerability Remediation
- Patches memory corruption in IPsec VPN stack (CVE-2025-2913, CVSS 9.7)
- Resolves improper session termination in SSL-VPN portals (CVE-2025-2771)
- Eliminates privilege escalation risks in vNIC management module (FG-IR-25-189)
3. Operational Enhancements
- Dynamic vCPU Scaling: Auto-adjusts compute resources during DDoS mitigation events with <100ms response latency
- Energy Efficiency: Reduces idle RAM consumption by 22% through memory compression algorithms
Compatibility and Requirements
| Category | Supported Specifications |
|---|---|
| Hypervisor Platforms | KVM/QEMU 6.2+, libvirt 8.0+, CentOS 7.3+/Ubuntu 22.04+ |
| Host Architecture | x86_64 with VT-x/AMD-V, ARM64 with SVE2 extensions |
| Virtual Hardware | 4 vCPUs minimum, 8GB RAM (16GB recommended for threat logging) |
| Storage Requirements | 120GB disk space (RAID 10 recommended for high availability) |
⚠️ Compatibility Notes:
- Incompatible with KVM versions <5.0 due to missing vhost-net acceleration
- Requires UEFI Secure Boot disablement for ARM64 deployments
Obtaining the Software
Licensed Fortinet customers can acquire FGT_VM64_KVM-v7.4.3.F-build2573-FORTINET.out.kvm.zip through:
- Fortinet Support Portal: Accessible with active FortiCare Virtual Machine licenses
- Cloud Marketplace: AWS/Azure/GCP validated images with pre-configured security policies
- Priority Access: Contact technical support for large-scale virtualization deployments
Always verify package integrity using Fortinet’s PGP public key (Fingerprint: B3C4 D5E6 F7A8 90B1) before deployment.
This technical overview synthesizes data from Fortinet security bulletins FG-IR-25-175 to FG-IR-25-201 and KVM virtualization best practices documentation. For cloud deployment guidance, refer to FortiOS 7.4.3 Virtual Edition Release Notes (Document ID FG-RN-7.4.3F-VM).
