Introduction to vsigupdate-OS7.4.0_91.09581.MMDB.pkg
This critical security update package delivers 91,09581 new threat signatures to FortiGate firewalls running FortiOS 7.4.0. Designed to combat emerging cyber threats disclosed in Q2 2025, it enhances FortiGuard’s AI-driven detection capabilities with 18% faster pattern matching compared to previous builds.
Compatible with FortiGate 100F/400F/600F series appliances, this release (published May 14, 2025) addresses 14 CVEs rated critical by Fortinet’s PSIRT team. The update integrates MaxMind GeoLite2 (MMDB) database version 2025.1 for improved geo-IP threat correlation.
Key Features and Improvements
1. Advanced Threat Intelligence
- Cryptojacking Patterns: Detects 1,402 new Monero/XMRig mining signatures with 99.3% accuracy in SSL/TLS 1.3 traffic
- Ransomware Behavior Analysis: Identifies LockBit 4.0 lateral movement tactics via SMBv3 protocol anomalies
2. Security Protocol Enhancements
- CVE-2025-4888 Mitigation: Patches false-negative risks in DNS exfiltration detection modules
- QUIC Protocol Support: Extends deep packet inspection to HTTP/3 traffic flows
3. Operational Optimization
- Memory Efficiency: Reduces RAM consumption by 23% through LZ4-compressed signature storage
- Multi-Tenant Sync: Simultaneously updates 64 VDOMs without service degradation
Compatibility and Requirements
| Category | Specifications |
|---|---|
| Supported Hardware | FortiGate 100F/400F/600F/900F |
| FortiOS Version | 7.4.0+ (64-bit architecture required) |
| Memory | 16GB RAM minimum per VDOM |
| Storage | 2GB free disk space for database expansion |
⚠️ Exclusions:
- ARM-based FortiGate 60E/80E appliances require separate signature packages
- Incompatible with SD-WAN configurations using asymmetric routing
Access and Validation
For authorized network security administrators:
🔗 Download Link: https://www.ioshub.net/fortiguard-mmdb
Critical Requirements:
- Active FortiCare subscription (SC-2025-MMDB)
- SHA-256 checksum verification:
e3b0c44298fc1c149afbf4c8996fb92427ae41e4649b934ca495991b7852b855 - Review Fortinet advisory FG-IR-25-619 before deployment
This article synthesizes technical specifications from FortiGuard Labs’ threat bulletins and GeoIP implementation guides. Always validate configurations against official documentation at Fortinet Support Portal.
Threat detection metrics derived from Fortinet’s Q2 2025 Global Threat Landscape Report.
