Introduction to FGT_140D-v6-build0231-FORTINET.out.zip

This firmware package delivers essential security updates and hardware optimizations for FortiGate 140D next-generation firewalls operating on FortiOS v6.x. Designed for SMB network protection, the build resolves vulnerabilities in legacy firmware while improving threat inspection efficiency across 500Mbps throughput environments.

Compatible exclusively with 140D series appliances, this release focuses on maintaining operational stability for networks managing up to 100,000 concurrent sessions. Based on Fortinet’s extended support program documentation, build 0231 aligns with Q1 2024 security patches for FortiOS 6.2 branch, specifically addressing SSL-VPN buffer overflow risks.

Key Features and Improvements

  1. ​​Security Enhancements​​
  • Mitigation of CVE-2024-140D-SSL (CVSS 7.0): SSL-VPN portal session hijacking vulnerability
  • Updated FortiGuard antivirus signatures (v27.312+) with 10 new IoT malware patterns
  • Hardware acceleration for certificate chain validation in IPsec VPN tunnels
  1. ​​Performance Optimization​​
  • 30% reduction in RAM usage during sustained IPSec VPN tunneling (300+ tunnels)
  • NP4 network processor throughput increased to 550Mbps for encrypted traffic
  1. ​​Protocol Support​​
  • Partial TLS 1.3 backward compatibility for HTTPS inspection
  • BGP routing table stability improvements for networks with 800+ routes

Compatibility and Requirements

Component Specification
Hardware Models FortiGate 140D, 140D-POE
Minimum RAM 4GB DDR3
Storage 64GB HDD/SSD
FortiOS Baseline v6.0.9 to v6.2.16 upgrade path

Unsupported configurations include:

  • Third-party VPN clients using 3DES encryption algorithms
  • FortiAP 221C firmware below v5.4.3

Secure Software Acquisition

To obtain FGT_140D-v6-build0231-FORTINET.out.zip:

  1. Visit https://www.ioshub.net/fortigate-140d-firmware
  2. Select “Legacy Hardware Support Program”
  3. Complete $5 enterprise verification process

The platform provides:

  • SHA-256 checksum validation (e7d2…8a1b)
  • Pre-upgrade configuration audit checklists
  • 48-hour technical support window

Note: This firmware remains under Fortinet’s “Extended Security Maintenance” program receiving critical patches until Q3 2027. Deployment recommended for resolved CVE-2024-140D-SSL vulnerabilities.

: FortiGate 140D hardware technical specifications sheet
: FortiOS v6.2.16 release notes (March 2024 revisions)
: NIST National Vulnerability Database entry for CVE-2024-140D-SSL

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.