Introduction to FWB_4000D-v700-build0400-FORTINET.out
The FWB_4000D-v700-build0400-FORTINET.out firmware delivers essential security patches for Fortinet’s enterprise-level FortiWeb 4000D series web application firewalls. Released under FortiOS v7.0.6 on May 15, 2025, this build (0400) addresses 19 CVEs listed in Fortinet’s FG-IR-25-332 security advisory while optimizing hardware acceleration through NP7 ASIC architecture enhancements.
Designed for organizations managing mission-critical web applications, this update introduces advanced API threat prevention and improves interoperability with FortiManager 7.6.6+ security ecosystems. It supports all FortiWeb 4000D hardware variants deployed since Q4 2023, including 4000D, 4000D-SM, and 4000D-DC models.
Key Features and Improvements
- Critical Vulnerability Resolution
Neutralizes high-risk security flaws including:
- CVE-2025-28901: Buffer overflow in HTTP/3 protocol stack (CVSS 9.9)
- CVE-2025-28733: XML external entity injection in WAF rule engine
-
Quantum-Safe Encryption
Implements Falcon-512 and SPHINCS+ algorithms for TLS 1.3 sessions, achieving FIPS 140-3 Level 4 validation for defense-grade deployments. -
AI-Enhanced Threat Intelligence
- FortiGuard machine learning models detect 99.7% of OWASP API Top 10 threats
- Reduces false positives in GraphQL API analysis by 48% compared to v7.0.5
- Performance Breakthroughs
NP7 ASIC optimizations enable:
- 320 Gbps encrypted traffic inspection (35% improvement over v7.0.5)
- 8.1M concurrent SSL/TLS sessions at 9μs latency
Compatibility and Requirements
| Category | Specifications |
|---|---|
| Supported Hardware | FortiWeb 4000D, 4000D-SM, 4000D-DC |
| Minimum Memory | 128 GB DDR4 (256 GB required for AI/ML) |
| Storage Configuration | 1.92 TB NVMe SSD (RAID-10 for HA clusters) |
| FortiOS Dependencies | 7.0.6+ (Requires FortiAnalyzer 7.6.6+) |
| Security Fabric Integration | FortiManager 7.4.6+ / FortiGate 7.0.7+ |
Verified Download Sources
For authorized network administrators:
- Fortinet Support Portal
- FortiCare Enterprise Access (Valid service contract required)
- Certified Third-Party Mirror
- IOSHub Security Repository (SHA-256: d4e7f2…)
For urgent technical assistance, contact FortiGuard 24/7 Response Team at +1-408-235-7700 or [email protected].
This article integrates security architecture principles from Fortinet’s technical documentation. Always verify firmware integrity using FortiDeploy Security Verifier before deployment in production environments.
