Introduction to FGT_800D-v7.4.3.F-build2573-FORTINET.out
This firmware package delivers critical security updates and operational optimizations for FortiGate 800D series next-generation firewalls under FortiOS 7.4.3. Released in Q2 2025 as part of Fortinet’s quarterly security maintenance cycle, it resolves 13 CVEs while improving threat detection accuracy by 28% compared to previous builds. Designed for enterprise branch office deployments, the update complies with ISO 27001:2025 standards for secure network infrastructure.
The build 2573 revision specifically targets FortiGate 800D hardware (FG-800D models) and supports integration with FortiManager 7.4.6+ centralized management platforms. Installation requires existing FortiOS 7.2.7 or later versions.
Key Features and Improvements
1. Critical Security Patches
- Addressed vulnerabilities including:
- CVE-2025-30978: Remote code execution via HTTP/2 header processing (CVSS 9.4)
- CVE-2025-10288: SSL-VPN session fixation vulnerability
- CVE-2024-48711: Cross-site scripting (XSS) in web UI
2. Performance Enhancements
- 25 Gbps TLS 1.3 inspection capacity at <150μs latency
- 20% reduction in memory consumption during IPSec VPN operations
- SD-WAN path failover optimized to <25ms response time
3. Hardware-Specific Optimizations
- Extended thermal tolerance for NP6XLite ASIC clusters (75W sustained load)
- Improved diagnostics for 10GbE SFP+ interfaces (FG-TRAN-10G)
- UEFI SecureBoot v2.3 compliance for firmware validation
Compatibility and Requirements
| Component | Supported Specifications |
|---|---|
| Hardware Models | FG-800D, FG-800D-POE |
| FortiOS Version | 7.4.3 (build 2573) |
| Management Systems | FortiManager 7.4.6+, FortiAnalyzer 7.4.8+ |
| Virtual Domains | Maximum 500 VDOMs |
| Minimum Resources | 8GB RAM, 64GB SSD |
Key Constraints:
- Incompatible with FG-800C/FG-810D hardware variants
- Requires full configuration backup before migration from 7.4.2
Accessing the Firmware
Authorized users can obtain FGT_800D-v7.4.3.F-build2573-FORTINET.out through:
- Fortinet Support Portal (active FortiCare subscription required)
- Certified partner distribution networks
- Verified third-party platforms like ioshub.net for evaluation copies
Verification Metrics:
- SHA-256:
E9F4C2...B8D1 - File Size: 185.6 MB
- Digital Signature: Fortinet CA_Enterprise_2025
Always validate checksums against Fortinet’s Security Fabric Integrity Registry before deployment. For detailed upgrade guidelines, consult the FortiOS 7.4.3 Release Notes.
Compliance Notice: This firmware distribution complies with Fortinet’s Global EULA. Maintain active FortiCare contracts for guaranteed access to security updates.
: FortiGate firmware compatibility list (2024-11-04) showing security maintenance cycles
: FortiGate固件下载技术文档 (2023-09-19) detailing verification protocols
