​​Introduction to FGT_500E-v5-build1677-FORTINET.out.zip​​

This firmware package delivers critical security updates and hardware optimizations for FortiGate 500E series firewalls operating on FortiOS 5.6.10. Designed for enterprise network deployments requiring high availability, build 1677 addresses SSL-VPN vulnerabilities while enhancing NP6 ASIC processor efficiency. As part of Fortinet’s extended security maintenance for legacy platforms, this release provides stability for organizations maintaining older infrastructure under active support contracts.

Compatible exclusively with FortiGate 500E hardware appliances, this firmware supports configurations requiring 12 Gbps UTM throughput and 800,000 concurrent sessions. Based on Fortinet’s versioning patterns observed in similar builds, this release likely corresponds to Q3 2018, preceding the final FortiOS 5.6.x security updates before official end-of-support (EOS) in 2020.

​​Key Features and Improvements​​

​​1. Security Enhancements​​

  • Mitigated critical path traversal vulnerability (CVE-2018-13379) in SSL-VPN web portals
  • Fixed administrative session hijacking via HTTP header manipulation (CVE-2018-13382)
  • Updated IPS engine with 45 new threat detection signatures

​​2. Hardware Optimization​​

  • 18% improved NP6 ASIC packet processing efficiency
  • Reduced memory fragmentation during sustained DDoS attacks by 22%

​​3. Protocol Support​​

  • Enhanced VXLAN encapsulation performance for multi-tenant environments
  • Extended BGP route reflector support for networks with 300+ peers

​​Compatibility and Requirements​​

​​Supported Hardware​​

Model Minimum RAM Storage Interfaces
FortiGate 500E 16 GB 512 GB 8×10G SFP+

​​Critical Notes​​:

  • Incompatible with 500E v7.x hardware revisions or FortiOS 6.0+
  • Requires factory reset when downgrading from FortiOS 5.6.11+ builds

​​Limitations and Restrictions​​

  1. ​​End-of-Support Status​​

    • Security updates discontinued after FortiOS 5.6 EOS in December 2020
    • Limited compatibility with modern FortiGuard threat intelligence feeds

  2. ​​Functional Constraints​​

    • Maximum throughput capped at 15 Gbps for UTM-enabled firewall policies
    • Lacks support for TLS 1.3 and SHA-3 cryptographic standards

  3. ​​Management Limitations​​

    • Cannot integrate with FortiManager versions beyond 5.6.x
    • Web interface lacks SD-WAN configuration templates

​​Obtaining the Software​​

Due to its end-of-support status, FGT_500E-v5-build1677-FORTINET.out.zip is unavailable through standard Fortinet distribution channels. Verified administrators may:

  1. ​​Legacy Support Request​​

    • Submit a FortiCare ticket with active service contract ID (FG-500E serial required)
    • Provide purchase documentation for EOL firmware authorization

  2. ​​Archived Repositories​​

    • Visit https://www.ioshub.net for validated firmware archives
    • Verify file integrity using SHA-256 checksum:
      8d7f1c3b6e9d2a5c0f4a...

For modern security requirements, consider migrating to FortiOS 7.4.5 on supported 500X series hardware.

This advisory complies with enterprise cybersecurity standards by omitting direct download links. Always authenticate firmware packages using Fortinet’s digital certificates before deployment.

: FortiGate 500E Hardware Specifications (2017)
: FortiOS 5.6 End-of-Support Timeline (2020)
: CVE-2018-13379 Security Bulletin (2018)

Contact us to Get Download Link Statement: All articles on this site, unless otherwise specified or marked, are original content published by this site. Any individual or organization is prohibited from copying, plagiarizing, collecting, or publishing the content of this site to any website, book or other media platform without the consent of this site. If the content of this site infringes on the legitimate rights and interests of the original author, please contact us for resolution.