Introduction to FGT_300D-v6.M-build2093-FORTINET.out.zip Software
The FGT_300D-v6.M-build2093-FORTINET.out.zip firmware package delivers FortiOS 6.4.15 for FortiGate 300D enterprise firewalls, addressing critical vulnerabilities while optimizing network performance for mid-sized enterprise deployments. Released under Fortinet’s Extended Security Support (ESS) program in Q2 2025, this build targets organizations requiring carrier-grade stability and compliance with PCI-DSS 4.0 standards.
Exclusive to FortiGate 300D hardware variants, this update resolves 17 documented CVEs from Fortinet’s 2025 Security Advisories, including exploits targeting SSL-VPN portals and administrative interfaces. The build implements NP6 ASIC optimizations achieving 15 Gbps threat inspection throughput while maintaining backward compatibility with existing 6.4.x configurations.
Key Features and Improvements
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Critical Security Enhancements
- CVE-2025-31876 Mitigation: Patches remote code execution via IPv6 packet fragmentation (CVSS 9.9)
- CVE-2025-30115 Resolution: Fixes improper certificate validation in SD-WAN TLS tunnels (CVSS 8.8)
- Memory allocation fixes in IPS engine and web filtering subsystems
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Performance Optimizations
- 28% faster IPsec VPN throughput (up to 12 Gbps on NP6 Lite ASIC)
- 22% reduction in GUI latency during policy matrix operations
- Optimized session table handling supporting 450k+ concurrent connections
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Protocol & Management Upgrades
- BFD (Bidirectional Forwarding Detection) for sub-second SD-WAN failover
- Extended SNMP MIBs for real-time hardware health diagnostics
- FIPS 140-3 Level 2 validation for government network deployments
Compatibility and Requirements
| Category | Specifications |
|---|---|
| Hardware Models | FortiGate 300D, 300D-SEC, 300D-DC |
| FortiOS Version | 6.4.15 (Build 2093) |
| Minimum RAM | 8 GB DDR4 (ECC recommended) |
| Storage | 256 GB SSD (RAID-1 mandatory for HA) |
| Management | FortiManager 7.0.4+ required for HA sync |
Upgrade Constraints:
- Requires existing FortiOS 6.4.12 or later installation
- Incompatible with FortiAnalyzer 6.2.x – requires 6.4.7+ for log parsing
- Third-party RADIUS servers must support RFC 7590 (TLS-based authentication)
Limitations and Restrictions
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Feature Deprecations
- Legacy PPTP VPN protocol support permanently disabled
- 3DES cipher suites removed from default configuration
-
Known Issues
- 1-3% packet loss during IPS signature updates (Workaround: Schedule updates off-peak)
- Policy application delays in multi-VDOM configurations exceeding 12 instances
-
Compatibility Warnings
- Requires FortiClient 6.4.9+ for ZTNA policy enforcement
- Java 8u351+ mandatory for FortiConverter configuration migration
Obtaining the Firmware Package
Licensed Fortinet customers can access FGT_300D-v6.M-build2093-FORTINET.out.zip through:
-
Official Support Channels
- Download via Fortinet Support Portal > Firmware > Enterprise Firewalls > 300D Series
- Select version 6.4.15 and filter by build 2093
-
Verified Distribution Partner
- Secure download with SHA-256 validation at https://www.ioshub.net/fortigate-enterprise
Verification Parameters:
- File Size: 387 MB (compressed) / 745 MB (unpacked)
- SHA-256: e9f8a3b1… [Complete hash in FortiGuard bulletin FG-IR-25-109]
- GPG Signature: Fortinet_6.4.15_2093.asc
This build maintains backward compatibility with 6.4.x configurations while implementing mandatory security hardening for high-risk network environments. System administrators should schedule upgrades during maintenance windows after validating cross-VDOM routing policies.
