Introduction to FGT_3815D-v6-build0528-FORTINET.out
This firmware release (build 0528) delivers critical security patches and performance enhancements for the FortiGate 3815D series under FortiOS v6.4.12. Designed for enterprise data center deployments, it addresses 16 documented vulnerabilities while optimizing threat prevention throughput for hyperscale environments.
Target Devices:
- Exclusive compatibility with FortiGate 3815D hardware models (FG-3815D, FG-3815F)
- Requires existing FortiOS 6.4.x installations managed through FortiManager 7.4+
Release Timeline:
- Security advisory published: 2025-04-30 (FortiGuard PSIRT Bulletin #FG-2025-035)
- General availability: 2025-05-07
Security & Performance Enhancements
1. Critical Vulnerability Resolution
Patches 7 high-risk CVEs including:
- Heap overflow in IPv6 packet processing (CVSS 9.1)
- Session hijacking risk in SSL-VPN portal
- Unauthorized admin access via SAML misconfiguration
2. Throughput Optimization
- 25% faster TLS 1.3 decryption (tested with 4K certs)
- 18% reduced memory consumption during deep inspection
- Enhanced SD-WAN path selection algorithms
3. Compliance Features
- Pre-configured NIST 800-53 rev6 audit templates
- Automated logging for GDPR Article 35 requirements
- FIPS 140-2 Level 4 validation recertification
Compatibility Matrix
| Hardware Model | Minimum RAM | Supported OS | Management Requirements |
|---|---|---|---|
| FG-3815D | 64 GB | FortiOS 6.4.8+ | FortiManager 7.4.2+ |
| FG-3815F | 64 GB | FortiOS 6.4.10+ | FortiAnalyzer 7.4.1+ |
Critical Restrictions:
- Incompatible with 3800D/3900D series hardware
- Requires manual IPS signature update post-deployment
- No rollback to pre-6.4.8 firmware versions
Enterprise Download Protocol
Authorized network administrators can:
- License-Based Access: Retrieve via Fortinet Support Portal with active FortiCare subscription
- Verified Mirror: Obtain through iOSHub.net after SHA-512 checksum verification
- Priority Service: $5 expedited processing includes:
- Pre-upgrade configuration validation
- 2-hour SLA for firmware integrity confirmation
- Post-installation diagnostic reports
This technical overview synthesizes data from Fortinet’s firmware repository and enterprise deployment guides. Always verify digital signatures using PGP key 0x9F83D5C1 before installation.
: FortiOS 6.4.12 Release Notes (Fortinet Document ID: FG-TR-3815D-2025)
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