1. Introduction to FGT_3810D-v6.M-build2000-FORTINET.out Software
This firmware package delivers critical security updates and operational enhancements for FortiGate 3800D series hyperscale firewalls operating on FortiOS 6.4 branch. Designed for enterprise networks requiring extended lifecycle support, it resolves 22 CVEs identified in previous versions while optimizing threat prevention capabilities for high-density environments.
The build (2000) corresponds to FortiOS 6.4.18, released in Q2 2025 under Fortinet’s Extended Support Program. It supports FG-3810D hardware variants with minimum 32GB RAM and 1TB SSD configurations, specifically engineered for data center deployments.
2. Key Features and Improvements
Security Reinforcement
- Patches CVE-2025-33509 (CVSS 9.6): Heap overflow in 100Gbps SSL inspection module
- Resolves CVE-2025-28761 (CVSS 8.9): Session hijacking vulnerability in SD-WAN orchestration
- Mitigates CVE-2025-30175 (CVSS 8.1): Weak cipher enforcement in TLS 1.3 handshake protocols
Performance Optimization
- 60% faster IPsec VPN tunnel establishment for 5,000+ concurrent sessions
- 40% memory reduction during deep packet inspection at 100Gbps throughput
- Enhanced BGP convergence stability for 10 million+ route tables
Protocol Advancements
- Adds SRv6 network programming support for 5G core network integration
- Expands VXLAN gateway capacity to 20,000 concurrent tunnels
- Enables quantum-resistant algorithms (CRYSTALS-Dilithium) for certificate authentication
3. Compatibility and Requirements
| Supported Hardware | Minimum Requirements | Incompatible Components |
|---|---|---|
| FG-3810D | 32GB RAM | FortiSwitch 7.8.1+ |
| FG-3810DF | 1TB SSD | FortiClient 7.6.x |
| FG-3810DX | FortiOS 6.4.15+ | SD-WAN Orchestrator 6.4 |
Release Date
2025-04-30 (Extended Support Program exclusive release)
Critical Notes
- Requires NP8 processors with firmware v4.25+ for full ASIC acceleration
- Incompatible with WAN optimization features in 7.4.x firmware branches
- Web filtering databases require manual synchronization post-upgrade
4. Limitations and Restrictions
- Maximum 120Gbps throughput when concurrently enabling IPS/IDS and SSL inspection
- LAG interface groups limited to 16x100G ports in this firmware iteration
- Mandates 48-hour burn-in testing for deployments exceeding 1,000 virtual domains
5. Verified Enterprise Access
This firmware version is exclusively available through Fortinet’s Platinum Support Network. Authorized partners may request validated packages via iOSHub after completing enterprise-grade authentication protocols.
Emergency deployment assistance is accessible through 24/7 Critical Support Channels with 10-minute SLA response commitments. Volume licensing includes automated configuration management for environments managing 1,000+ devices.
Disclaimer: Always validate firmware integrity using SHA3-512 checksums (e3b0c4…98ba) prior to deployment. Full regression testing in isolated environments is mandatory for mission-critical network infrastructure.
SEO Keywords
FortiGate 3800D firmware v6.4.18 download, FGT_3810D-v6.M-build2000-FORTINET.out security update, hyperscale firewall maintenance release, data center network protection patch, FortiOS 6.4 extended lifecycle support
Documentation References
[FortiOS 6.4 Extended Support Technical Bulletin]
[FortiGate 3800D Series Hardware Specifications]
[Fortinet Quantum-Safe Cryptography Implementation Guide]
