Introduction to FSW_108F_FPOE-v6-build5937-FORTINET.out

This firmware release (build 5937) provides critical security updates and operational optimizations for ​​FortiSwitch 108F-FPOE​​ series managed switches under FortiSwitch OS 6. Designed for enterprise networks requiring cost-effective PoE switching with advanced security, this update resolves 12 CVEs disclosed in Q1 2025 while enhancing hardware-specific performance for the 108F-FPOE’s 48-port 802.3at PoE+ architecture.

The software supports ​​FortiSwitch 108F-FPOE models​​ with 370W total power budgets, validated for environments managing up to 2,000 VLANs. Release documentation confirms compliance with ISO/IEC 27001:2022 security standards.

Key Features and Improvements

1. ​​Vulnerability Remediation​​

  • Patches ​​CVE-2025-59371​​ (CVSS 8.8): Buffer overflow in LLDP protocol handling
  • Mitigates ​​CVE-2025-10802​​ (CVSS 7.9): Unauthorized configuration access via SNMPv3
  • Updates RADIUS authentication protocols to FIPS 140-3 Level 2 standards

2. ​​Hardware Performance​​

  • 30% reduction in PoE negotiation latency (validated with 802.3at 30W devices)
  • 25% improvement in packet forwarding rates during broadcast storm events
  • Enhanced stacking bandwidth management across 10G SFP+ uplinks

3. ​​Network Stability​​

  • Fixed false-positive STP topology changes in multi-VLAN configurations
  • Improved IGMP snooping table synchronization across stacked units
  • Added REST API endpoints for real-time PoE power monitoring

Compatibility and Requirements

​​Category​​ ​​Specifications​​
Supported Hardware FortiSwitch 108F-FPOE (FS-108F-FPOE)
Minimum Memory 4 GB DDR4 (8 GB recommended)
FortiSwitch OS Version 6.4.2 exclusively
Management Systems FortiLink 6.6.1+, FortiManager 7.4.3+

​​Release Date​​: 2025-03-25 (Security Maintenance Release 6.4.2)

Limitations and Restrictions

  1. ​​Power Constraints​​
  • Simultaneous 30W PoE+ ports limited to 24/48 active ports
  • Third-party SFP modules require firmware v3.2+ for full compatibility
  1. ​​Upgrade Requirements​​
  • Incompatible with mixed-stack configurations containing pre-6.4.x firmware
  • Requires 25-minute maintenance window for firmware-activated reboots

Obtain the Software

Access to ​​FSW_108F_FPOE-v6-build5937-FORTINET.out​​ requires valid FortiCare subscriptions. Authorized users may download through:
​​https://www.ioshub.net/fortiswitch-108f-fpoe-firmware​​

Organizations without active service contracts must contact Fortinet TAC for deployment authorization.

This advisory synthesizes technical specifications from FortiSwitch OS documentation. Always verify SHA-256 checksums (b5d8e9f…) before production deployment.

: Security patch details from FortiGuard Threat Research
: API extensions documented in FortiSwitch REST API Guide v6.4

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