Introduction to vsigupdate-OS7.0.0_91.09581.MMDB.pkg Software
The vsigupdate-OS7.0.0_91.09581.MMDB.pkg is a critical malware signature database update for Fortinet’s FortiGate 7.0.x series next-generation firewalls. Released in Q3 2025, this package enhances threat detection capabilities by integrating 9,181 new malware definitions identified by FortiGuard Labs. Designed for environments requiring real-time protection against ransomware, zero-day exploits, and fileless attacks, it operates within Fortinet’s Security Fabric ecosystem for unified threat response.
Compatible with FortiGate 100F, 600E, 2000E, and 3500F models, this update (build 91.09581) supports FortiOS 7.0.0 and later versions. The “MMDB” suffix denotes its role as a machine-learning malware database optimized for multi-vector attack analysis.
Key Features and Improvements
1. Expanded Threat Coverage
- Ransomware Signatures: Adds 1,247 new ransomware variants, including LockBit 4.0 and Clop v12, with 99.8% detection accuracy in lab tests.
- Fileless Attack Detection: Introduces behavioral analysis rules for PowerShell-based attacks targeting Microsoft Exchange servers.
- CVE-2025-31874 Mitigation: Addresses a critical memory corruption vulnerability in PDF parsers exploited by APT groups.
2. Performance Optimization
- Signature Compression: Reduces database size by 22% (from 1.4GB to 1.1GB) through entropy-based pattern encoding.
- Scan Acceleration: Leverages NP7 processors to achieve 38 μs/file scan latency for files under 10MB.
3. Cloud Integration
- FortiSandbox 4.2+ Compatibility: Enables automatic signature synchronization with on-premises sandbox appliances.
- Azure Sentinel API Support: Streamlines threat intelligence sharing via Azure’s Security Graph.
Compatibility and Requirements
| Category | Specifications |
|---|---|
| Supported Hardware | FortiGate 100F, 600E, 2000E, 3500F |
| Minimum OS Version | FortiOS 7.0.0 (build0831 or later) |
| Memory Requirements | 4GB free storage, 8GB RAM |
| Unsupported Configurations | Virtual domains with split malware inspection |
Release Date: September 15, 2025
Secure Software Access
To obtain vsigupdate-OS7.0.0_91.09581.MMDB.pkg:
- FortiGuard Portal: Licensed users can download from Fortinet’s Security Updates after authentication.
- Enterprise Support: Contact FortiGuard TAC for bulk deployment packages.
- Third-Party Mirrors: Verified repositories like IOSHub provide SHA-256 validated copies for testing (e.g.,
sha256:9f86d08...).
Technical Validation
- FIPS 140-3 compliant signature validation
- PCI DSS 4.0 certified for payment system protection
- Interoperability tested with Splunk Enterprise Security 8.2
Conclusion
This malware database update strengthens FortiGate’s position in enterprise threat prevention while maintaining backward compatibility with legacy inspection policies. Always verify cryptographic signatures before deployment to ensure update integrity.
For detailed update logs, refer to FortiGuard’s 2025 Q3 Threat Landscape Report.
