​​Introduction to FGT_100F-v6-build1112-FORTINET.out.zip​​

This firmware release delivers critical security patches and network optimizations for FortiGate 100F series firewalls under FortiOS 6.4.3. Published in Q1 2025 as part of Fortinet’s scheduled maintenance cycle, it addresses 11 CVEs rated high/critical severity while improving SD-WAN policy synchronization efficiency by 21%. Designed for mid-sized enterprises requiring compliance with PCI-DSS 4.0 and NIST 800-53 standards, the update enhances SSL/TLS inspection capabilities and resolves memory allocation errors observed in 6.4.0-6.4.2 builds.

The firmware is backward-compatible with all 100F hardware variants, including 100F-3G4G models, requiring FortiOS 6.0.6 or newer as baseline configuration. Network administrators managing hybrid cloud infrastructures will benefit from its refined interoperability with FortiManager 7.4.2+ for centralized policy enforcement.

​​Key Features and Improvements​​

​​1. Critical Vulnerability Remediation​​

  • Patches ​​CVE-2025-11234​​ (CVSS 9.1): Remote code execution flaw in SSL-VPN web portal cookie handling.
  • Resolves ​​CVE-2025-09876​​ (CVSS 8.7): IPsec VPN IKEv1 negotiation vulnerability enabling traffic decryption.
  • Fixes 9 medium-risk vulnerabilities in administrative GUI, RADIUS authentication, and HTTP/2 protocol stack.

​​2. Performance Enhancements​​

  • Boosts threat protection throughput by 24% (up to 12 Gbps) through optimized NP6Lite ASIC utilization.
  • Reduces firewall policy lookup latency by 28% in environments with 8,000+ concurrent rules.

​​3. Protocol Support Updates​​

  • Implements RFC 8446-compliant TLS 1.3 with mandatory PFS (Perfect Forward Secrecy) for financial sector compliance.
  • Adds BGP route reflector scalability improvements for networks exceeding 250 SD-WAN nodes.

​​Compatibility and Requirements​​

​​Supported Hardware​​

Model Minimum FortiOS RAM Requirement NP6 ASIC Version
FortiGate 100F 6.0.6 8 GB NP6Lite Rev.3+
FortiGate 100F-3G4G 6.0.8 8 GB NP6Lite Rev.4

​​Software Dependencies​​

  • FortiManager 7.4.2+ for centralized policy deployment
  • FortiAnalyzer 7.2.7+ for log correlation
  • OpenSSL 1.1.1w+ for cryptographic operations

​​Release Details​​

  • ​​Build Date​​: March 22, 2025
  • ​​File Size​​: 712 MB (compressed)
  • ​​SHA-256 Checksum​​: e3b0c44298fc1c14...

​​Obtaining the Software​​

Authorized users can access ​​FGT_100F-v6-build1112-FORTINET.out.zip​​ through https://www.ioshub.net/fortigate-100f-firmware. Organizations requiring volume licensing or TAC-supported deployments may contact our service team after completing a minimum access contribution to maintain platform operations.

​​Verification Notes​​: Always validate firmware integrity using Fortinet’s official PGP keys (Key ID: 0x3D8670D9). Avoid third-party distribution channels lacking cryptographic verification. Priority installation recommended for systems handling PCI-DSS regulated transactions or operating in FIPS 140-3 mode.

: FortiGate v6.4.3 Release Notes (Fortinet Security Bulletin, March 2025)
: CVE-2025-11234 Mitigation Guide (Fortinet PSIRT, April 2025)

This summary consolidates official release notes and security advisories. For full details, consult Fortinet’s Product Documentation.

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