Stormshield Firmware 4.3 End of Life
Support dates and upgrade guidance — rebuilt from live data.
Stormshield Firmware 4.3 reached end of life on 31 Mar 2026. It no longer receives security fixes.
Support timeline
Official dates from the Stormshield Firmware release process.
| Milestone | Date | Status |
|---|---|---|
| Initial release | 12 Jan 2022 | — |
| End of life | 31 Mar 2026 | 0.4 years ago |
| Active support ended | 31 Dec 2025 | security fixes only after this |
| Latest release | — | final |
Where to go from 4.3
Recommended target: Stormshield Firmware 5.0.
The newest actively supported branch is Stormshield Firmware 5.0 (latest release ).
Frequently asked questions
Is Stormshield Firmware 4.3 still safe to use?
Stormshield Firmware 4.3 reached end of life on 31 Mar 2026, 131 days ago, and is no longer covered by standard support. Running it means no guaranteed security fixes.
Can I still download Stormshield Firmware 4.3?
Yes — the final release (4.3) generally remains available from vendor archives and OS package mirrors, but installing it means running software with known, unpatched vulnerabilities.
What should I upgrade Stormshield Firmware 4.3 to?
Upgrade to Stormshield Firmware 5.0, the newest actively supported branch.