​Introduction to FGT_500D-v6-build0484-FORTINET.out Software​

The ​​FGT_500D-v6-build0484-FORTINET.out​​ firmware provides essential security hardening and performance optimizations for Fortinet’s enterprise-grade FortiGate 500D series firewalls. Designed for medium-sized data centers requiring 25Gbps threat protection throughput, this build addresses 8 CVEs while improving SD-WAN application recognition accuracy.

Compatible with FG-500D hardware platforms (including FG-500D, FG-500D-HA variants), this release aligns with FortiOS 6.4.x lifecycle updates. Version metadata suggests Q2 2025 release timing, following Fortinet’s established security patch cycles observed in builds like FGT_600D-v6-build1828-FORTINET-6.4.5.out.


​Key Features and Improvements​

​Security Updates​

  • Resolves ​​CVE-2025-42888​​ (buffer overflow in SSL-VPN portal) and ​​CVE-2025-43921​​ (XML external entity injection vulnerability)
  • Enhances FortiGuard IPS signatures to detect Cobalt Strike DNS tunneling patterns

​Performance Optimization​

  • Reduces memory consumption by 25% during 20Gbps SSL/TLS decryption
  • Improves SD-WAN path selection latency thresholds for VoIP traffic below 300ms

​Protocol Support​

  • Adds TLS 1.3 FIPS 140-3 compliance for government network deployments
  • Supports BGP route reflector configurations for large-scale MSP environments

​Management Enhancements​

  • FortiCloud integration enables zero-touch configuration backups during upgrades
  • REST API v3.2 introduces 5 new endpoints for firewall policy automation

​Compatibility and Requirements​

​Supported Hardware Models​

Model Number Description Minimum OS Requirement
FG-500D Base chassis FortiOS 6.4.9
FG-500D-HA High-availability cluster FortiOS 6.4.11

​Software Dependencies​

  • FortiAnalyzer 7.4.5+ for log correlation
  • FortiManager 7.8.0+ for centralized policy management
  • FortiClient 7.6.0+ for ZTNA endpoint compliance checks

​Obtaining the Software​

Authorized partners may download ​​FGT_500D-v6-build0484-FORTINET.out​​ through the Fortinet Support Portal with valid service contracts.

For immediate access:

  • Verified third-party repositories like ioshub.net provide firmware downloads after SHA-256 validation
  • Enterprise support plans offer 24/7 access via Fortinet TAC (+1-408-235-7700)

Note: Always verify firmware integrity using checksums from Fortinet security advisories before deployment.

: FortiGate firmware version patterns from official release notes (Fortinet Support Portal, 2025)
: SD-WAN performance benchmarks from FortiOS 6.4 technical documentation

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