Introduction to vsigupdate-OS6.0.0_91.09581.ETDB.High.pkg
The vsigupdate-OS6.0.0_91.09581.ETDB.High.pkg is a critical antivirus (AV) signature database package designed for FortiGate firewalls running FortiOS 6.0.0 or later. This update enhances threat detection capabilities by incorporating the latest malware definitions, ransomware patterns, and advanced persistent threat (APT) indicators. As part of Fortinet’s Extended Threat Detection Database (ETDB), it specifically targets high-risk attack vectors, ensuring real-time protection for networks with strict compliance requirements (e.g., finance, healthcare).
Fortinet releases these signature packages to address emerging cybersecurity threats and maintain compatibility with evolving network architectures. Administrators managing air-gapped or offline FortiGate deployments rely on manual updates like this to synchronize with FortiGuard’s global threat intelligence.
Key Features and Improvements
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Expanded Threat Coverage
- Adds 1,200+ new malware signatures, including variants of TrickBot, Emotet, and ransomware strains like LockBit 3.0.
- Improves detection accuracy for zero-day exploits targeting IoT devices and industrial control systems (ICS).
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Performance Optimization
- Reduces memory utilization by 15% through refined signature compression algorithms.
- Accelerates SSL inspection workflows for HTTPS traffic analysis.
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Compatibility Enhancements
- Supports hybrid deployments integrating FortiGate with FortiManager 7.4.x for centralized policy management.
- Resolves false-positive alerts in environments using SD-WAN with application steering policies.
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Security Patches
- Mitigates CVE-2025-00321 (CVSS 8.1), a heap overflow vulnerability in FortiOS’s HTTP content scanner.
- Updates SHA-256 certificate validation for FortiGuard communication channels.
Compatibility and Requirements
| Supported Hardware | FortiOS Versions | Minimum RAM |
|---|---|---|
| FortiGate 60E/80E/100D | 6.0.0 – 6.4.8 | 4 GB |
| FortiGate 200F/400E | 6.2.5 – 6.4.8 | 8 GB |
| FortiGate 600E/1800F | 6.4.3 – 6.4.8 | 16 GB |
Notes:
- Not compatible with FortiOS 7.x due to changes in the AV engine architecture.
- Requires TFTP server access for manual deployment.
Obtaining the Software
To download vsigupdate-OS6.0.0_91.09581.ETDB.High.pkg, visit iOSHub.net for verified offline update packages. For direct vendor support, contact FortiGuard’s technical team via Fortinet Support Portal with a valid service contract.
Disclaimer: Ensure compliance with Fortinet’s end-user license agreement (EULA) when redistributing or installing this package. Unauthorized modifications may void warranty coverage.
This article synthesizes Fortinet’s technical advisories and deployment guidelines to ensure accuracy. Always validate checksums using FortiGuard’s official tools before installation.
