Fortinet FortiManager 300E — End-of-Life & EOSL Dates
Fortinet FortiManager 300E management appliance. Published end-of-order (end-of-sale) and end-of-support (EOSL) dates from Fortinet's public hardware Product Life Cycle feed, linked for verification.
Every tracked Fortinet FortiManager 300E SKU group is past Fortinet end of service life (last group Aug 2025). Units in production should be treated as unsupported. For past-EOSL units, weigh third-party maintenance, spares, replacement, or a documented run-to-failure.
End of sale
Jul 2018 – Aug 2020
Last date of support
Jul 2023 – Aug 2025
Part numbers
2
37
months past last support
Why this score
- Past end of service life — 37 months ago
- Vendor-published date, source-linked
- Category: management appliance
Support-lifecycle timing and source confidence only. Higher means more runway. It is not a risk, safety or compliance rating. How it is calculated
Past end of support and listed in the CISA Known Exploited Vulnerabilities catalog
1 catalogued vulnerability is associated with this product line, 1 of them linked to known ransomware campaigns. CISA lists these as actively exploited. This product is also past its last date of support, so the vendor no longer issues fixes for it. Past support on its own is a planning matter; both together is an audit finding, and for US federal agencies BOD 22-01 sets a remediation deadline.
CISA names product lines and software rather than part numbers, so each row states how it was matched. Confirm against the vendor advisory before acting: this augments vendor data, it does not replace it.
CISA Known Exploited Vulnerabilities catalog · catalogue 2026.08.18 · every tracked product past support and in KEV
Part numbers in this family
Dates vary across 2 groups in this family, so every row carries its own. Find your exact part before you plan.
| Part number | Description | End of sale | Last support | Status |
|---|---|---|---|---|
| FortiManager-300E-USG | Fortinet FortiManager-300E-USG management appliance | Jul 2018 | Jul 2023 | Past support |
| FortiManager-300E | Fortinet FortiManager-300E management appliance | Aug 2020 | Aug 2025 | Past support |
Options from here
The Fortinet FortiManager 300E is past Fortinet end of service life. These are the paths teams take from here:
Keep it in production past the OEM cutoff with an independent maintainer.
Buy spares now, while units still circulate on the secondary market.
It is unsupported today. Set a migration timeline and budget.
Low-criticality role: document the risk, harden backups, retire on your terms.
Independent and informational. EOSL.ai sells no hardware and no maintenance, and lists no paid placements. Third-party maintenance keeps unsupported gear in production past the OEM cutoff; whether it fits depends on the role the asset plays.
Fortinet FortiManager 300E — questions
Is the Fortinet FortiManager 300E end of life?
Yes. Every tracked FortiManager 300E SKU group is past its last date of support.
What is the last date of support for the FortiManager 300E?
Last dates of support across FortiManager 300E SKU groups range from Jul 2023 to Aug 2025.
Where do these FortiManager 300E dates come from?
Every end-of-sale and end-of-service-life date on this page links to the official Fortinet end-of-sale bulletin it was taken from.
On the same timetable
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